Initializemain

5 files changed, 15640 insertions, 0 deletions

diff --git a/src/main/resources/static/plugins/uplot/uPlot.cjs.js b/src/main/resources/static/plugins/uplot/uPlot.cjs.js
new file mode 100644
index 0000000..84a4894
--- /dev/null
+++ b/src/main/resources/static/plugins/uplot/uPlot.cjs.js
@@ -0,0 +1,5212 @@
+/**
+* Copyright (c) 2021, Leon Sorokin
+* All rights reserved. (MIT Licensed)
+*
+* uPlot.js (μPlot)
+* A small, fast chart for time series, lines, areas, ohlc & bars
+* https://github.com/leeoniya/uPlot (v1.6.18)
+*/
+
+'use strict';
+
+const FEAT_TIME          = true;
+
+// binary search for index of closest value
+function closestIdx(num, arr, lo, hi) {
+	let mid;
+	lo = lo || 0;
+	hi = hi || arr.length - 1;
+	let bitwise = hi <= 2147483647;
+
+	while (hi - lo > 1) {
+		mid = bitwise ? (lo + hi) >> 1 : floor((lo + hi) / 2);
+
+		if (arr[mid] < num)
+			lo = mid;
+		else
+			hi = mid;
+	}
+
+	if (num - arr[lo] <= arr[hi] - num)
+		return lo;
+
+	return hi;
+}
+
+function nonNullIdx(data, _i0, _i1, dir) {
+	for (let i = dir == 1 ? _i0 : _i1; i >= _i0 && i <= _i1; i += dir) {
+		if (data[i] != null)
+			return i;
+	}
+
+	return -1;
+}
+
+function getMinMax(data, _i0, _i1, sorted) {
+//	console.log("getMinMax()");
+
+	let _min = inf;
+	let _max = -inf;
+
+	if (sorted == 1) {
+		_min = data[_i0];
+		_max = data[_i1];
+	}
+	else if (sorted == -1) {
+		_min = data[_i1];
+		_max = data[_i0];
+	}
+	else {
+		for (let i = _i0; i <= _i1; i++) {
+			if (data[i] != null) {
+				_min = min(_min, data[i]);
+				_max = max(_max, data[i]);
+			}
+		}
+	}
+
+	return [_min, _max];
+}
+
+function getMinMaxLog(data, _i0, _i1) {
+//	console.log("getMinMax()");
+
+	let _min = inf;
+	let _max = -inf;
+
+	for (let i = _i0; i <= _i1; i++) {
+		if (data[i] > 0) {
+			_min = min(_min, data[i]);
+			_max = max(_max, data[i]);
+		}
+	}
+
+	return [
+		_min ==  inf ?  1 : _min,
+		_max == -inf ? 10 : _max,
+	];
+}
+
+const _fixedTuple = [0, 0];
+
+function fixIncr(minIncr, maxIncr, minExp, maxExp) {
+	_fixedTuple[0] = minExp < 0 ? roundDec(minIncr, -minExp) : minIncr;
+	_fixedTuple[1] = maxExp < 0 ? roundDec(maxIncr, -maxExp) : maxIncr;
+	return _fixedTuple;
+}
+
+function rangeLog(min, max, base, fullMags) {
+	let minSign = sign(min);
+
+	let logFn = base == 10 ? log10 : log2;
+
+	if (min == max) {
+		if (minSign == -1) {
+			min *= base;
+			max /= base;
+		}
+		else {
+			min /= base;
+			max *= base;
+		}
+	}
+
+	let minExp, maxExp, minMaxIncrs;
+
+	if (fullMags) {
+		minExp = floor(logFn(min));
+		maxExp =  ceil(logFn(max));
+
+		minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+		min = minMaxIncrs[0];
+		max = minMaxIncrs[1];
+	}
+	else {
+		minExp = floor(logFn(abs(min)));
+		maxExp = floor(logFn(abs(max)));
+
+		minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+		min = incrRoundDn(min, minMaxIncrs[0]);
+		max = incrRoundUp(max, minMaxIncrs[1]);
+	}
+
+	return [min, max];
+}
+
+function rangeAsinh(min, max, base, fullMags) {
+	let minMax = rangeLog(min, max, base, fullMags);
+
+	if (min == 0)
+		minMax[0] = 0;
+
+	if (max == 0)
+		minMax[1] = 0;
+
+	return minMax;
+}
+
+const rangePad = 0.1;
+
+const autoRangePart = {
+	mode: 3,
+	pad: rangePad,
+};
+
+const _eqRangePart = {
+	pad:  0,
+	soft: null,
+	mode: 0,
+};
+
+const _eqRange = {
+	min: _eqRangePart,
+	max: _eqRangePart,
+};
+
+// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+function rangeNum(_min, _max, mult, extra) {
+	if (isObj(mult))
+		return _rangeNum(_min, _max, mult);
+
+	_eqRangePart.pad  = mult;
+	_eqRangePart.soft = extra ? 0 : null;
+	_eqRangePart.mode = extra ? 3 : 0;
+
+	return _rangeNum(_min, _max, _eqRange);
+}
+
+// nullish coalesce
+function ifNull(lh, rh) {
+	return lh == null ? rh : lh;
+}
+
+// checks if given index range in an array contains a non-null value
+// aka a range-bounded Array.some()
+function hasData(data, idx0, idx1) {
+	idx0 = ifNull(idx0, 0);
+	idx1 = ifNull(idx1, data.length - 1);
+
+	while (idx0 <= idx1) {
+		if (data[idx0] != null)
+			return true;
+		idx0++;
+	}
+
+	return false;
+}
+
+function _rangeNum(_min, _max, cfg) {
+	let cmin = cfg.min;
+	let cmax = cfg.max;
+
+	let padMin = ifNull(cmin.pad, 0);
+	let padMax = ifNull(cmax.pad, 0);
+
+	let hardMin = ifNull(cmin.hard, -inf);
+	let hardMax = ifNull(cmax.hard,  inf);
+
+	let softMin = ifNull(cmin.soft,  inf);
+	let softMax = ifNull(cmax.soft, -inf);
+
+	let softMinMode = ifNull(cmin.mode, 0);
+	let softMaxMode = ifNull(cmax.mode, 0);
+
+	let delta        = _max - _min;
+
+	// this handles situations like 89.7, 89.69999999999999
+	// by assuming 0.001x deltas are precision errors
+//	if (delta > 0 && delta < abs(_max) / 1e3)
+//		delta = 0;
+
+	// treat data as flat if delta is less than 1 billionth
+	if (delta < 1e-9) {
+		delta = 0;
+
+		// if soft mode is 2 and all vals are flat at 0, avoid the 0.1 * 1e3 fallback
+		// this prevents 0,0,0 from ranging to -100,100 when softMin/softMax are -1,1
+		if (_min == 0 || _max == 0) {
+			delta = 1e-9;
+
+			if (softMinMode == 2 && softMin != inf)
+				padMin = 0;
+
+			if (softMaxMode == 2 && softMax != -inf)
+				padMax = 0;
+		}
+	}
+
+	let nonZeroDelta = delta || abs(_max) || 1e3;
+	let mag          = log10(nonZeroDelta);
+	let base         = pow(10, floor(mag));
+
+	let _padMin  = nonZeroDelta * (delta == 0 ? (_min == 0 ? .1 : 1) : padMin);
+	let _newMin  = roundDec(incrRoundDn(_min - _padMin, base/10), 9);
+	let _softMin = _min >= softMin && (softMinMode == 1 || softMinMode == 3 && _newMin <= softMin || softMinMode == 2 && _newMin >= softMin) ? softMin : inf;
+	let minLim   = max(hardMin, _newMin < _softMin && _min >= _softMin ? _softMin : min(_softMin, _newMin));
+
+	let _padMax  = nonZeroDelta * (delta == 0 ? (_max == 0 ? .1 : 1) : padMax);
+	let _newMax  = roundDec(incrRoundUp(_max + _padMax, base/10), 9);
+	let _softMax = _max <= softMax && (softMaxMode == 1 || softMaxMode == 3 && _newMax >= softMax || softMaxMode == 2 && _newMax <= softMax) ? softMax : -inf;
+	let maxLim   = min(hardMax, _newMax > _softMax && _max <= _softMax ? _softMax : max(_softMax, _newMax));
+
+	if (minLim == maxLim && minLim == 0)
+		maxLim = 100;
+
+	return [minLim, maxLim];
+}
+
+// alternative: https://stackoverflow.com/a/2254896
+const fmtNum = new Intl.NumberFormat(navigator.language).format;
+
+const M = Math;
+
+const PI = M.PI;
+const abs = M.abs;
+const floor = M.floor;
+const round = M.round;
+const ceil = M.ceil;
+const min = M.min;
+const max = M.max;
+const pow = M.pow;
+const sign = M.sign;
+const log10 = M.log10;
+const log2 = M.log2;
+// TODO: seems like this needs to match asinh impl if the passed v is tweaked?
+const sinh =  (v, linthresh = 1) => M.sinh(v) * linthresh;
+const asinh = (v, linthresh = 1) => M.asinh(v / linthresh);
+
+const inf = Infinity;
+
+function numIntDigits(x) {
+	return (log10((x ^ (x >> 31)) - (x >> 31)) | 0) + 1;
+}
+
+function incrRound(num, incr) {
+	return round(num/incr)*incr;
+}
+
+function clamp(num, _min, _max) {
+	return min(max(num, _min), _max);
+}
+
+function fnOrSelf(v) {
+	return typeof v == "function" ? v : () => v;
+}
+
+const retArg0 = _0 => _0;
+
+const retArg1 = (_0, _1) => _1;
+
+const retNull = _ => null;
+
+const retTrue = _ => true;
+
+const retEq = (a, b) => a == b;
+
+function incrRoundUp(num, incr) {
+	return ceil(num/incr)*incr;
+}
+
+function incrRoundDn(num, incr) {
+	return floor(num/incr)*incr;
+}
+
+function roundDec(val, dec) {
+	return round(val * (dec = 10**dec)) / dec;
+}
+
+const fixedDec = new Map();
+
+function guessDec(num) {
+	return ((""+num).split(".")[1] || "").length;
+}
+
+function genIncrs(base, minExp, maxExp, mults) {
+	let incrs = [];
+
+	let multDec = mults.map(guessDec);
+
+	for (let exp = minExp; exp < maxExp; exp++) {
+		let expa = abs(exp);
+		let mag = roundDec(pow(base, exp), expa);
+
+		for (let i = 0; i < mults.length; i++) {
+			let _incr = mults[i] * mag;
+			let dec = (_incr >= 0 && exp >= 0 ? 0 : expa) + (exp >= multDec[i] ? 0 : multDec[i]);
+			let incr = roundDec(_incr, dec);
+			incrs.push(incr);
+			fixedDec.set(incr, dec);
+		}
+	}
+
+	return incrs;
+}
+
+//export const assign = Object.assign;
+
+const EMPTY_OBJ = {};
+const EMPTY_ARR = [];
+
+const nullNullTuple = [null, null];
+
+const isArr = Array.isArray;
+
+function isStr(v) {
+	return typeof v == 'string';
+}
+
+function isObj(v) {
+	let is = false;
+
+	if (v != null) {
+		let c = v.constructor;
+		is = c == null || c == Object;
+	}
+
+	return is;
+}
+
+function fastIsObj(v) {
+	return v != null && typeof v == 'object';
+}
+
+function copy(o, _isObj = isObj) {
+	let out;
+
+	if (isArr(o)) {
+		let val = o.find(v => v != null);
+
+		if (isArr(val) || _isObj(val)) {
+			out = Array(o.length);
+			for (let i = 0; i < o.length; i++)
+			  out[i] = copy(o[i], _isObj);
+		}
+		else
+			out = o.slice();
+	}
+	else if (_isObj(o)) {
+		out = {};
+		for (let k in o)
+			out[k] = copy(o[k], _isObj);
+	}
+	else
+		out = o;
+
+	return out;
+}
+
+function assign(targ) {
+	let args = arguments;
+
+	for (let i = 1; i < args.length; i++) {
+		let src = args[i];
+
+		for (let key in src) {
+			if (isObj(targ[key]))
+				assign(targ[key], copy(src[key]));
+			else
+				targ[key] = copy(src[key]);
+		}
+	}
+
+	return targ;
+}
+
+// nullModes
+const NULL_REMOVE = 0;  // nulls are converted to undefined (e.g. for spanGaps: true)
+const NULL_RETAIN = 1;  // nulls are retained, with alignment artifacts set to undefined (default)
+const NULL_EXPAND = 2;  // nulls are expanded to include any adjacent alignment artifacts
+
+// sets undefined values to nulls when adjacent to existing nulls (minesweeper)
+function nullExpand(yVals, nullIdxs, alignedLen) {
+	for (let i = 0, xi, lastNullIdx = -1; i < nullIdxs.length; i++) {
+		let nullIdx = nullIdxs[i];
+
+		if (nullIdx > lastNullIdx) {
+			xi = nullIdx - 1;
+			while (xi >= 0 && yVals[xi] == null)
+				yVals[xi--] = null;
+
+			xi = nullIdx + 1;
+			while (xi < alignedLen && yVals[xi] == null)
+				yVals[lastNullIdx = xi++] = null;
+		}
+	}
+}
+
+// nullModes is a tables-matched array indicating how to treat nulls in each series
+// output is sorted ASC on the joined field (table[0]) and duplicate join values are collapsed
+function join(tables, nullModes) {
+	let xVals = new Set();
+
+	for (let ti = 0; ti < tables.length; ti++) {
+		let t = tables[ti];
+		let xs = t[0];
+		let len = xs.length;
+
+		for (let i = 0; i < len; i++)
+			xVals.add(xs[i]);
+	}
+
+	let data = [Array.from(xVals).sort((a, b) => a - b)];
+
+	let alignedLen = data[0].length;
+
+	let xIdxs = new Map();
+
+	for (let i = 0; i < alignedLen; i++)
+		xIdxs.set(data[0][i], i);
+
+	for (let ti = 0; ti < tables.length; ti++) {
+		let t = tables[ti];
+		let xs = t[0];
+
+		for (let si = 1; si < t.length; si++) {
+			let ys = t[si];
+
+			let yVals = Array(alignedLen).fill(undefined);
+
+			let nullMode = nullModes ? nullModes[ti][si] : NULL_RETAIN;
+
+			let nullIdxs = [];
+
+			for (let i = 0; i < ys.length; i++) {
+				let yVal = ys[i];
+				let alignedIdx = xIdxs.get(xs[i]);
+
+				if (yVal === null) {
+					if (nullMode != NULL_REMOVE) {
+						yVals[alignedIdx] = yVal;
+
+						if (nullMode == NULL_EXPAND)
+							nullIdxs.push(alignedIdx);
+					}
+				}
+				else
+					yVals[alignedIdx] = yVal;
+			}
+
+			nullExpand(yVals, nullIdxs, alignedLen);
+
+			data.push(yVals);
+		}
+	}
+
+	return data;
+}
+
+const microTask = typeof queueMicrotask == "undefined" ? fn => Promise.resolve().then(fn) : queueMicrotask;
+
+const WIDTH       = "width";
+const HEIGHT      = "height";
+const TOP         = "top";
+const BOTTOM      = "bottom";
+const LEFT        = "left";
+const RIGHT       = "right";
+const hexBlack    = "#000";
+const transparent = hexBlack + "0";
+
+const mousemove   = "mousemove";
+const mousedown   = "mousedown";
+const mouseup     = "mouseup";
+const mouseenter  = "mouseenter";
+const mouseleave  = "mouseleave";
+const dblclick    = "dblclick";
+const resize      = "resize";
+const scroll      = "scroll";
+
+const change      = "change";
+const dppxchange  = "dppxchange";
+
+const pre = "u-";
+
+const UPLOT          =       "uplot";
+const ORI_HZ         = pre + "hz";
+const ORI_VT         = pre + "vt";
+const TITLE          = pre + "title";
+const WRAP           = pre + "wrap";
+const UNDER          = pre + "under";
+const OVER           = pre + "over";
+const AXIS           = pre + "axis";
+const OFF            = pre + "off";
+const SELECT         = pre + "select";
+const CURSOR_X       = pre + "cursor-x";
+const CURSOR_Y       = pre + "cursor-y";
+const CURSOR_PT      = pre + "cursor-pt";
+const LEGEND         = pre + "legend";
+const LEGEND_LIVE    = pre + "live";
+const LEGEND_INLINE  = pre + "inline";
+const LEGEND_THEAD   = pre + "thead";
+const LEGEND_SERIES  = pre + "series";
+const LEGEND_MARKER  = pre + "marker";
+const LEGEND_LABEL   = pre + "label";
+const LEGEND_VALUE   = pre + "value";
+
+const doc = document;
+const win = window;
+let pxRatio;
+
+let query;
+
+function setPxRatio() {
+	let _pxRatio = devicePixelRatio;
+
+	// during print preview, Chrome fires off these dppx queries even without changes
+	if (pxRatio != _pxRatio) {
+		pxRatio = _pxRatio;
+
+		query && off(change, query, setPxRatio);
+		query = matchMedia(`(min-resolution: ${pxRatio - 0.001}dppx) and (max-resolution: ${pxRatio + 0.001}dppx)`);
+		on(change, query, setPxRatio);
+
+		win.dispatchEvent(new CustomEvent(dppxchange));
+	}
+}
+
+function addClass(el, c) {
+	if (c != null) {
+		let cl = el.classList;
+		!cl.contains(c) && cl.add(c);
+	}
+}
+
+function remClass(el, c) {
+	let cl = el.classList;
+	cl.contains(c) && cl.remove(c);
+}
+
+function setStylePx(el, name, value) {
+	el.style[name] = value + "px";
+}
+
+function placeTag(tag, cls, targ, refEl) {
+	let el = doc.createElement(tag);
+
+	if (cls != null)
+		addClass(el, cls);
+
+	if (targ != null)
+		targ.insertBefore(el, refEl);
+
+	return el;
+}
+
+function placeDiv(cls, targ) {
+	return placeTag("div", cls, targ);
+}
+
+const xformCache = new WeakMap();
+
+function elTrans(el, xPos, yPos, xMax, yMax) {
+	let xform = "translate(" + xPos + "px," + yPos + "px)";
+	let xformOld = xformCache.get(el);
+
+	if (xform != xformOld) {
+		el.style.transform = xform;
+		xformCache.set(el, xform);
+
+		if (xPos < 0 || yPos < 0 || xPos > xMax || yPos > yMax)
+			addClass(el, OFF);
+		else
+			remClass(el, OFF);
+	}
+}
+
+const colorCache = new WeakMap();
+
+function elColor(el, background, borderColor) {
+	let newColor = background + borderColor;
+	let oldColor = colorCache.get(el);
+
+	if (newColor != oldColor) {
+		colorCache.set(el, newColor);
+		el.style.background = background;
+		el.style.borderColor = borderColor;
+	}
+}
+
+const sizeCache = new WeakMap();
+
+function elSize(el, newWid, newHgt, centered) {
+	let newSize = newWid + "" + newHgt;
+	let oldSize = sizeCache.get(el);
+
+	if (newSize != oldSize) {
+		sizeCache.set(el, newSize);
+		el.style.height = newHgt + "px";
+		el.style.width = newWid + "px";
+		el.style.marginLeft = centered ? -newWid/2 + "px" : 0;
+		el.style.marginTop = centered ? -newHgt/2 + "px" : 0;
+	}
+}
+
+const evOpts = {passive: true};
+const evOpts2 = assign({capture: true}, evOpts);
+
+function on(ev, el, cb, capt) {
+	el.addEventListener(ev, cb, capt ? evOpts2 : evOpts);
+}
+
+function off(ev, el, cb, capt) {
+	el.removeEventListener(ev, cb, capt ? evOpts2 : evOpts);
+}
+
+setPxRatio();
+
+const months = [
+	"January",
+	"February",
+	"March",
+	"April",
+	"May",
+	"June",
+	"July",
+	"August",
+	"September",
+	"October",
+	"November",
+	"December",
+];
+
+const days = [
+	"Sunday",
+	"Monday",
+	"Tuesday",
+	"Wednesday",
+	"Thursday",
+	"Friday",
+	"Saturday",
+];
+
+function slice3(str) {
+	return str.slice(0, 3);
+}
+
+const days3 = days.map(slice3);
+
+const months3 = months.map(slice3);
+
+const engNames = {
+	MMMM: months,
+	MMM:  months3,
+	WWWW: days,
+	WWW:  days3,
+};
+
+function zeroPad2(int) {
+	return (int < 10 ? '0' : '') + int;
+}
+
+function zeroPad3(int) {
+	return (int < 10 ? '00' : int < 100 ? '0' : '') + int;
+}
+
+/*
+function suffix(int) {
+	let mod10 = int % 10;
+
+	return int + (
+		mod10 == 1 && int != 11 ? "st" :
+		mod10 == 2 && int != 12 ? "nd" :
+		mod10 == 3 && int != 13 ? "rd" : "th"
+	);
+}
+*/
+
+const subs = {
+	// 2019
+	YYYY:	d => d.getFullYear(),
+	// 19
+	YY:		d => (d.getFullYear()+'').slice(2),
+	// July
+	MMMM:	(d, names) => names.MMMM[d.getMonth()],
+	// Jul
+	MMM:	(d, names) => names.MMM[d.getMonth()],
+	// 07
+	MM:		d => zeroPad2(d.getMonth()+1),
+	// 7
+	M:		d => d.getMonth()+1,
+	// 09
+	DD:		d => zeroPad2(d.getDate()),
+	// 9
+	D:		d => d.getDate(),
+	// Monday
+	WWWW:	(d, names) => names.WWWW[d.getDay()],
+	// Mon
+	WWW:	(d, names) => names.WWW[d.getDay()],
+	// 03
+	HH:		d => zeroPad2(d.getHours()),
+	// 3
+	H:		d => d.getHours(),
+	// 9 (12hr, unpadded)
+	h:		d => {let h = d.getHours(); return h == 0 ? 12 : h > 12 ? h - 12 : h;},
+	// AM
+	AA:		d => d.getHours() >= 12 ? 'PM' : 'AM',
+	// am
+	aa:		d => d.getHours() >= 12 ? 'pm' : 'am',
+	// a
+	a:		d => d.getHours() >= 12 ? 'p' : 'a',
+	// 09
+	mm:		d => zeroPad2(d.getMinutes()),
+	// 9
+	m:		d => d.getMinutes(),
+	// 09
+	ss:		d => zeroPad2(d.getSeconds()),
+	// 9
+	s:		d => d.getSeconds(),
+	// 374
+	fff:	d => zeroPad3(d.getMilliseconds()),
+};
+
+function fmtDate(tpl, names) {
+	names = names || engNames;
+	let parts = [];
+
+	let R = /\{([a-z]+)\}|[^{]+/gi, m;
+
+	while (m = R.exec(tpl))
+		parts.push(m[0][0] == '{' ? subs[m[1]] : m[0]);
+
+	return d => {
+		let out = '';
+
+		for (let i = 0; i < parts.length; i++)
+			out += typeof parts[i] == "string" ? parts[i] : parts[i](d, names);
+
+		return out;
+	}
+}
+
+const localTz = new Intl.DateTimeFormat().resolvedOptions().timeZone;
+
+// https://stackoverflow.com/questions/15141762/how-to-initialize-a-javascript-date-to-a-particular-time-zone/53652131#53652131
+function tzDate(date, tz) {
+	let date2;
+
+	// perf optimization
+	if (tz == 'UTC' || tz == 'Etc/UTC')
+		date2 = new Date(+date + date.getTimezoneOffset() * 6e4);
+	else if (tz == localTz)
+		date2 = date;
+	else {
+		date2 = new Date(date.toLocaleString('en-US', {timeZone: tz}));
+		date2.setMilliseconds(date.getMilliseconds());
+	}
+
+	return date2;
+}
+
+//export const series = [];
+
+// default formatters:
+
+const onlyWhole = v => v % 1 == 0;
+
+const allMults = [1,2,2.5,5];
+
+// ...0.01, 0.02, 0.025, 0.05, 0.1, 0.2, 0.25, 0.5
+const decIncrs = genIncrs(10, -16, 0, allMults);
+
+// 1, 2, 2.5, 5, 10, 20, 25, 50...
+const oneIncrs = genIncrs(10, 0, 16, allMults);
+
+// 1, 2,      5, 10, 20, 25, 50...
+const wholeIncrs = oneIncrs.filter(onlyWhole);
+
+const numIncrs = decIncrs.concat(oneIncrs);
+
+const NL = "\n";
+
+const yyyy    = "{YYYY}";
+const NLyyyy  = NL + yyyy;
+const md      = "{M}/{D}";
+const NLmd    = NL + md;
+const NLmdyy  = NLmd + "/{YY}";
+
+const aa      = "{aa}";
+const hmm     = "{h}:{mm}";
+const hmmaa   = hmm + aa;
+const NLhmmaa = NL + hmmaa;
+const ss      = ":{ss}";
+
+const _ = null;
+
+function genTimeStuffs(ms) {
+	let	s  = ms * 1e3,
+		m  = s  * 60,
+		h  = m  * 60,
+		d  = h  * 24,
+		mo = d  * 30,
+		y  = d  * 365;
+
+	// min of 1e-3 prevents setting a temporal x ticks too small since Date objects cannot advance ticks smaller than 1ms
+	let subSecIncrs = ms == 1 ? genIncrs(10, 0, 3, allMults).filter(onlyWhole) : genIncrs(10, -3, 0, allMults);
+
+	let timeIncrs = subSecIncrs.concat([
+		// minute divisors (# of secs)
+		s,
+		s * 5,
+		s * 10,
+		s * 15,
+		s * 30,
+		// hour divisors (# of mins)
+		m,
+		m * 5,
+		m * 10,
+		m * 15,
+		m * 30,
+		// day divisors (# of hrs)
+		h,
+		h * 2,
+		h * 3,
+		h * 4,
+		h * 6,
+		h * 8,
+		h * 12,
+		// month divisors TODO: need more?
+		d,
+		d * 2,
+		d * 3,
+		d * 4,
+		d * 5,
+		d * 6,
+		d * 7,
+		d * 8,
+		d * 9,
+		d * 10,
+		d * 15,
+		// year divisors (# months, approx)
+		mo,
+		mo * 2,
+		mo * 3,
+		mo * 4,
+		mo * 6,
+		// century divisors
+		y,
+		y * 2,
+		y * 5,
+		y * 10,
+		y * 25,
+		y * 50,
+		y * 100,
+	]);
+
+	// [0]:   minimum num secs in the tick incr
+	// [1]:   default tick format
+	// [2-7]: rollover tick formats
+	// [8]:   mode: 0: replace [1] -> [2-7], 1: concat [1] + [2-7]
+	const _timeAxisStamps = [
+	//   tick incr    default          year                    month   day                   hour    min       sec   mode
+		[y,           yyyy,            _,                      _,      _,                    _,      _,        _,       1],
+		[d * 28,      "{MMM}",         NLyyyy,                 _,      _,                    _,      _,        _,       1],
+		[d,           md,              NLyyyy,                 _,      _,                    _,      _,        _,       1],
+		[h,           "{h}" + aa,      NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+		[m,           hmmaa,           NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+		[s,           ss,              NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+		[ms,          ss + ".{fff}",   NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+	];
+
+	// the ensures that axis ticks, values & grid are aligned to logical temporal breakpoints and not an arbitrary timestamp
+	// https://www.timeanddate.com/time/dst/
+	// https://www.timeanddate.com/time/dst/2019.html
+	// https://www.epochconverter.com/timezones
+	function timeAxisSplits(tzDate) {
+		return (self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace) => {
+			let splits = [];
+			let isYr = foundIncr >= y;
+			let isMo = foundIncr >= mo && foundIncr < y;
+
+			// get the timezone-adjusted date
+			let minDate = tzDate(scaleMin);
+			let minDateTs = roundDec(minDate * ms, 3);
+
+			// get ts of 12am (this lands us at or before the original scaleMin)
+			let minMin = mkDate(minDate.getFullYear(), isYr ? 0 : minDate.getMonth(), isMo || isYr ? 1 : minDate.getDate());
+			let minMinTs = roundDec(minMin * ms, 3);
+
+			if (isMo || isYr) {
+				let moIncr = isMo ? foundIncr / mo : 0;
+				let yrIncr = isYr ? foundIncr / y  : 0;
+			//	let tzOffset = scaleMin - minDateTs;		// needed?
+				let split = minDateTs == minMinTs ? minDateTs : roundDec(mkDate(minMin.getFullYear() + yrIncr, minMin.getMonth() + moIncr, 1) * ms, 3);
+				let splitDate = new Date(round(split / ms));
+				let baseYear = splitDate.getFullYear();
+				let baseMonth = splitDate.getMonth();
+
+				for (let i = 0; split <= scaleMax; i++) {
+					let next = mkDate(baseYear + yrIncr * i, baseMonth + moIncr * i, 1);
+					let offs = next - tzDate(roundDec(next * ms, 3));
+
+					split = roundDec((+next + offs) * ms, 3);
+
+					if (split <= scaleMax)
+						splits.push(split);
+				}
+			}
+			else {
+				let incr0 = foundIncr >= d ? d : foundIncr;
+				let tzOffset = floor(scaleMin) - floor(minDateTs);
+				let split = minMinTs + tzOffset + incrRoundUp(minDateTs - minMinTs, incr0);
+				splits.push(split);
+
+				let date0 = tzDate(split);
+
+				let prevHour = date0.getHours() + (date0.getMinutes() / m) + (date0.getSeconds() / h);
+				let incrHours = foundIncr / h;
+
+				let minSpace = self.axes[axisIdx]._space;
+				let pctSpace = foundSpace / minSpace;
+
+				while (1) {
+					split = roundDec(split + foundIncr, ms == 1 ? 0 : 3);
+
+					if (split > scaleMax)
+						break;
+
+					if (incrHours > 1) {
+						let expectedHour = floor(roundDec(prevHour + incrHours, 6)) % 24;
+						let splitDate = tzDate(split);
+						let actualHour = splitDate.getHours();
+
+						let dstShift = actualHour - expectedHour;
+
+						if (dstShift > 1)
+							dstShift = -1;
+
+						split -= dstShift * h;
+
+						prevHour = (prevHour + incrHours) % 24;
+
+						// add a tick only if it's further than 70% of the min allowed label spacing
+						let prevSplit = splits[splits.length - 1];
+						let pctIncr = roundDec((split - prevSplit) / foundIncr, 3);
+
+						if (pctIncr * pctSpace >= .7)
+							splits.push(split);
+					}
+					else
+						splits.push(split);
+				}
+			}
+
+			return splits;
+		}
+	}
+
+	return [
+		timeIncrs,
+		_timeAxisStamps,
+		timeAxisSplits,
+	];
+}
+
+const [ timeIncrsMs, _timeAxisStampsMs, timeAxisSplitsMs ] = genTimeStuffs(1);
+const [ timeIncrsS,  _timeAxisStampsS,  timeAxisSplitsS  ] = genTimeStuffs(1e-3);
+
+// base 2
+genIncrs(2, -53, 53, [1]);
+
+/*
+console.log({
+	decIncrs,
+	oneIncrs,
+	wholeIncrs,
+	numIncrs,
+	timeIncrs,
+	fixedDec,
+});
+*/
+
+function timeAxisStamps(stampCfg, fmtDate) {
+	return stampCfg.map(s => s.map((v, i) =>
+		i == 0 || i == 8 || v == null ? v : fmtDate(i == 1 || s[8] == 0 ? v : s[1] + v)
+	));
+}
+
+// TODO: will need to accept spaces[] and pull incr into the loop when grid will be non-uniform, eg for log scales.
+// currently we ignore this for months since they're *nearly* uniform and the added complexity is not worth it
+function timeAxisVals(tzDate, stamps) {
+	return (self, splits, axisIdx, foundSpace, foundIncr) => {
+		let s = stamps.find(s => foundIncr >= s[0]) || stamps[stamps.length - 1];
+
+		// these track boundaries when a full label is needed again
+		let prevYear;
+		let prevMnth;
+		let prevDate;
+		let prevHour;
+		let prevMins;
+		let prevSecs;
+
+		return splits.map(split => {
+			let date = tzDate(split);
+
+			let newYear = date.getFullYear();
+			let newMnth = date.getMonth();
+			let newDate = date.getDate();
+			let newHour = date.getHours();
+			let newMins = date.getMinutes();
+			let newSecs = date.getSeconds();
+
+			let stamp = (
+				newYear != prevYear && s[2] ||
+				newMnth != prevMnth && s[3] ||
+				newDate != prevDate && s[4] ||
+				newHour != prevHour && s[5] ||
+				newMins != prevMins && s[6] ||
+				newSecs != prevSecs && s[7] ||
+				                       s[1]
+			);
+
+			prevYear = newYear;
+			prevMnth = newMnth;
+			prevDate = newDate;
+			prevHour = newHour;
+			prevMins = newMins;
+			prevSecs = newSecs;
+
+			return stamp(date);
+		});
+	}
+}
+
+// for when axis.values is defined as a static fmtDate template string
+function timeAxisVal(tzDate, dateTpl) {
+	let stamp = fmtDate(dateTpl);
+	return (self, splits, axisIdx, foundSpace, foundIncr) => splits.map(split => stamp(tzDate(split)));
+}
+
+function mkDate(y, m, d) {
+	return new Date(y, m, d);
+}
+
+function timeSeriesStamp(stampCfg, fmtDate) {
+	return fmtDate(stampCfg);
+}
+const _timeSeriesStamp = '{YYYY}-{MM}-{DD} {h}:{mm}{aa}';
+
+function timeSeriesVal(tzDate, stamp) {
+	return (self, val) => stamp(tzDate(val));
+}
+
+function legendStroke(self, seriesIdx) {
+	let s = self.series[seriesIdx];
+	return s.width ? s.stroke(self, seriesIdx) : s.points.width ? s.points.stroke(self, seriesIdx) : null;
+}
+
+function legendFill(self, seriesIdx) {
+	return self.series[seriesIdx].fill(self, seriesIdx);
+}
+
+const legendOpts = {
+	show: true,
+	live: true,
+	isolate: false,
+	markers: {
+		show: true,
+		width: 2,
+		stroke: legendStroke,
+		fill: legendFill,
+		dash: "solid",
+	},
+	idx: null,
+	idxs: null,
+	values: [],
+};
+
+function cursorPointShow(self, si) {
+	let o = self.cursor.points;
+
+	let pt = placeDiv();
+
+	let size = o.size(self, si);
+	setStylePx(pt, WIDTH, size);
+	setStylePx(pt, HEIGHT, size);
+
+	let mar = size / -2;
+	setStylePx(pt, "marginLeft", mar);
+	setStylePx(pt, "marginTop", mar);
+
+	let width = o.width(self, si, size);
+	width && setStylePx(pt, "borderWidth", width);
+
+	return pt;
+}
+
+function cursorPointFill(self, si) {
+	let sp = self.series[si].points;
+	return sp._fill || sp._stroke;
+}
+
+function cursorPointStroke(self, si) {
+	let sp = self.series[si].points;
+	return sp._stroke || sp._fill;
+}
+
+function cursorPointSize(self, si) {
+	let sp = self.series[si].points;
+	return ptDia(sp.width, 1);
+}
+
+function dataIdx(self, seriesIdx, cursorIdx) {
+	return cursorIdx;
+}
+
+const moveTuple = [0,0];
+
+function cursorMove(self, mouseLeft1, mouseTop1) {
+	moveTuple[0] = mouseLeft1;
+	moveTuple[1] = mouseTop1;
+	return moveTuple;
+}
+
+function filtBtn0(self, targ, handle) {
+	return e => {
+		e.button == 0 && handle(e);
+	};
+}
+
+function passThru(self, targ, handle) {
+	return handle;
+}
+
+const cursorOpts = {
+	show: true,
+	x: true,
+	y: true,
+	lock: false,
+	move: cursorMove,
+	points: {
+		show:   cursorPointShow,
+		size:   cursorPointSize,
+		width:  0,
+		stroke: cursorPointStroke,
+		fill:   cursorPointFill,
+	},
+
+	bind: {
+		mousedown:   filtBtn0,
+		mouseup:     filtBtn0,
+		click:       filtBtn0,
+		dblclick:    filtBtn0,
+
+		mousemove:   passThru,
+		mouseleave:  passThru,
+		mouseenter:  passThru,
+	},
+
+	drag: {
+		setScale: true,
+		x: true,
+		y: false,
+		dist: 0,
+		uni: null,
+		_x: false,
+		_y: false,
+	},
+
+	focus: {
+		prox: -1,
+	},
+
+	left: -10,
+	top: -10,
+	idx: null,
+	dataIdx,
+	idxs: null,
+};
+
+const grid = {
+	show: true,
+	stroke: "rgba(0,0,0,0.07)",
+	width: 2,
+//	dash: [],
+	filter: retArg1,
+};
+
+const ticks = assign({}, grid, {size: 10});
+
+const font      = '12px system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"';
+const labelFont = "bold " + font;
+const lineMult = 1.5;		// font-size multiplier
+
+const xAxisOpts = {
+	show: true,
+	scale: "x",
+	stroke: hexBlack,
+	space: 50,
+	gap: 5,
+	size: 50,
+	labelGap: 0,
+	labelSize: 30,
+	labelFont,
+	side: 2,
+//	class: "x-vals",
+//	incrs: timeIncrs,
+//	values: timeVals,
+//	filter: retArg1,
+	grid,
+	ticks,
+	font,
+	rotate: 0,
+};
+
+const numSeriesLabel = "Value";
+const timeSeriesLabel = "Time";
+
+const xSeriesOpts = {
+	show: true,
+	scale: "x",
+	auto: false,
+	sorted: 1,
+//	label: "Time",
+//	value: v => stamp(new Date(v * 1e3)),
+
+	// internal caches
+	min: inf,
+	max: -inf,
+	idxs: [],
+};
+
+function numAxisVals(self, splits, axisIdx, foundSpace, foundIncr) {
+	return splits.map(v => v == null ? "" : fmtNum(v));
+}
+
+function numAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	let splits = [];
+
+	let numDec = fixedDec.get(foundIncr) || 0;
+
+	scaleMin = forceMin ? scaleMin : roundDec(incrRoundUp(scaleMin, foundIncr), numDec);
+
+	for (let val = scaleMin; val <= scaleMax; val = roundDec(val + foundIncr, numDec))
+		splits.push(Object.is(val, -0) ? 0 : val);		// coalesces -0
+
+	return splits;
+}
+
+// this doesnt work for sin, which needs to come off from 0 independently in pos and neg dirs
+function logAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	const splits = [];
+
+	const logBase = self.scales[self.axes[axisIdx].scale].log;
+
+	const logFn = logBase == 10 ? log10 : log2;
+
+	const exp = floor(logFn(scaleMin));
+
+	foundIncr = pow(logBase, exp);
+
+	if (exp < 0)
+		foundIncr = roundDec(foundIncr, -exp);
+
+	let split = scaleMin;
+
+	do {
+		splits.push(split);
+		split = roundDec(split + foundIncr, fixedDec.get(foundIncr));
+
+		if (split >= foundIncr * logBase)
+			foundIncr = split;
+
+	} while (split <= scaleMax);
+
+	return splits;
+}
+
+function asinhAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	let sc = self.scales[self.axes[axisIdx].scale];
+
+	let linthresh = sc.asinh;
+
+	let posSplits = scaleMax > linthresh ? logAxisSplits(self, axisIdx, max(linthresh, scaleMin), scaleMax, foundIncr) : [linthresh];
+	let zero = scaleMax >= 0 && scaleMin <= 0 ? [0] : [];
+	let negSplits = scaleMin < -linthresh ? logAxisSplits(self, axisIdx, max(linthresh, -scaleMax), -scaleMin, foundIncr): [linthresh];
+
+	return negSplits.reverse().map(v => -v).concat(zero, posSplits);
+}
+
+const RE_ALL   = /./;
+const RE_12357 = /[12357]/;
+const RE_125   = /[125]/;
+const RE_1     = /1/;
+
+function logAxisValsFilt(self, splits, axisIdx, foundSpace, foundIncr) {
+	let axis = self.axes[axisIdx];
+	let scaleKey = axis.scale;
+	let sc = self.scales[scaleKey];
+
+	if (sc.distr == 3 && sc.log == 2)
+		return splits;
+
+	let valToPos = self.valToPos;
+
+	let minSpace = axis._space;
+
+	let _10 = valToPos(10, scaleKey);
+
+	let re = (
+		valToPos(9, scaleKey) - _10 >= minSpace ? RE_ALL :
+		valToPos(7, scaleKey) - _10 >= minSpace ? RE_12357 :
+		valToPos(5, scaleKey) - _10 >= minSpace ? RE_125 :
+		RE_1
+	);
+
+	return splits.map(v => ((sc.distr == 4 && v == 0) || re.test(v)) ? v : null);
+}
+
+function numSeriesVal(self, val) {
+	return val == null ? "" : fmtNum(val);
+}
+
+const yAxisOpts = {
+	show: true,
+	scale: "y",
+	stroke: hexBlack,
+	space: 30,
+	gap: 5,
+	size: 50,
+	labelGap: 0,
+	labelSize: 30,
+	labelFont,
+	side: 3,
+//	class: "y-vals",
+//	incrs: numIncrs,
+//	values: (vals, space) => vals,
+//	filter: retArg1,
+	grid,
+	ticks,
+	font,
+	rotate: 0,
+};
+
+// takes stroke width
+function ptDia(width, mult) {
+	let dia = 3 + (width || 1) * 2;
+	return roundDec(dia * mult, 3);
+}
+
+function seriesPointsShow(self, si) {
+	let { scale, idxs } = self.series[0];
+	let xData = self._data[0];
+	let p0 = self.valToPos(xData[idxs[0]], scale, true);
+	let p1 = self.valToPos(xData[idxs[1]], scale, true);
+	let dim = abs(p1 - p0);
+
+	let s = self.series[si];
+//	const dia = ptDia(s.width, pxRatio);
+	let maxPts = dim / (s.points.space * pxRatio);
+	return idxs[1] - idxs[0] <= maxPts;
+}
+
+function seriesFillTo(self, seriesIdx, dataMin, dataMax) {
+	let scale = self.scales[self.series[seriesIdx].scale];
+	let isUpperBandEdge = self.bands && self.bands.some(b => b.series[0] == seriesIdx);
+	return scale.distr == 3 || isUpperBandEdge ? scale.min : 0;
+}
+
+const facet = {
+	scale: null,
+	auto: true,
+
+	// internal caches
+	min: inf,
+	max: -inf,
+};
+
+const xySeriesOpts = {
+	show: true,
+	auto: true,
+	sorted: 0,
+	alpha: 1,
+	facets: [
+		assign({}, facet, {scale: 'x'}),
+		assign({}, facet, {scale: 'y'}),
+	],
+};
+
+const ySeriesOpts = {
+	scale: "y",
+	auto: true,
+	sorted: 0,
+	show: true,
+	spanGaps: false,
+	gaps: (self, seriesIdx, idx0, idx1, nullGaps) => nullGaps,
+	alpha: 1,
+	points: {
+		show: seriesPointsShow,
+		filter: null,
+	//  paths:
+	//	stroke: "#000",
+	//	fill: "#fff",
+	//	width: 1,
+	//	size: 10,
+	},
+//	label: "Value",
+//	value: v => v,
+	values: null,
+
+	// internal caches
+	min: inf,
+	max: -inf,
+	idxs: [],
+
+	path: null,
+	clip: null,
+};
+
+function clampScale(self, val, scaleMin, scaleMax, scaleKey) {
+/*
+	if (val < 0) {
+		let cssHgt = self.bbox.height / pxRatio;
+		let absPos = self.valToPos(abs(val), scaleKey);
+		let fromBtm = cssHgt - absPos;
+		return self.posToVal(cssHgt + fromBtm, scaleKey);
+	}
+*/
+	return scaleMin / 10;
+}
+
+const xScaleOpts = {
+	time: FEAT_TIME,
+	auto: true,
+	distr: 1,
+	log: 10,
+	asinh: 1,
+	min: null,
+	max: null,
+	dir: 1,
+	ori: 0,
+};
+
+const yScaleOpts = assign({}, xScaleOpts, {
+	time: false,
+	ori: 1,
+});
+
+const syncs = {};
+
+function _sync(key, opts) {
+	let s = syncs[key];
+
+	if (!s) {
+		s = {
+			key,
+			plots: [],
+			sub(plot) {
+				s.plots.push(plot);
+			},
+			unsub(plot) {
+				s.plots = s.plots.filter(c => c != plot);
+			},
+			pub(type, self, x, y, w, h, i) {
+				for (let j = 0; j < s.plots.length; j++)
+					s.plots[j] != self && s.plots[j].pub(type, self, x, y, w, h, i);
+			},
+		};
+
+		if (key != null)
+			syncs[key] = s;
+	}
+
+	return s;
+}
+
+const BAND_CLIP_FILL   = 1 << 0;
+const BAND_CLIP_STROKE = 1 << 1;
+
+function orient(u, seriesIdx, cb) {
+	const series = u.series[seriesIdx];
+	const scales = u.scales;
+	const bbox   = u.bbox;
+	const scaleX = u.mode == 2 ? scales[series.facets[0].scale] : scales[u.series[0].scale];
+
+	let dx = u._data[0],
+		dy = u._data[seriesIdx],
+		sx = scaleX,
+		sy = u.mode == 2 ? scales[series.facets[1].scale] : scales[series.scale],
+		l = bbox.left,
+		t = bbox.top,
+		w = bbox.width,
+		h = bbox.height,
+		H = u.valToPosH,
+		V = u.valToPosV;
+
+	return (sx.ori == 0
+		? cb(
+			series,
+			dx,
+			dy,
+			sx,
+			sy,
+			H,
+			V,
+			l,
+			t,
+			w,
+			h,
+			moveToH,
+			lineToH,
+			rectH,
+			arcH,
+			bezierCurveToH,
+		)
+		: cb(
+			series,
+			dx,
+			dy,
+			sx,
+			sy,
+			V,
+			H,
+			t,
+			l,
+			h,
+			w,
+			moveToV,
+			lineToV,
+			rectV,
+			arcV,
+			bezierCurveToV,
+		)
+	);
+}
+
+// creates inverted band clip path (towards from stroke path -> yMax)
+function clipBandLine(self, seriesIdx, idx0, idx1, strokePath) {
+	return orient(self, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+		let pxRound = series.pxRound;
+
+		const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+		const lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+		let frIdx, toIdx;
+
+		if (dir == 1) {
+			frIdx = idx0;
+			toIdx = idx1;
+		}
+		else {
+			frIdx = idx1;
+			toIdx = idx0;
+		}
+
+		// path start
+		let x0 = pxRound(valToPosX(dataX[frIdx], scaleX, xDim, xOff));
+		let y0 = pxRound(valToPosY(dataY[frIdx], scaleY, yDim, yOff));
+		// path end x
+		let x1 = pxRound(valToPosX(dataX[toIdx], scaleX, xDim, xOff));
+		// upper y limit
+		let yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+
+		let clip = new Path2D(strokePath);
+
+		lineTo(clip, x1, yLimit);
+		lineTo(clip, x0, yLimit);
+		lineTo(clip, x0, y0);
+
+		return clip;
+	});
+}
+
+function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
+	let clip = null;
+
+	// create clip path (invert gaps and non-gaps)
+	if (gaps.length > 0) {
+		clip = new Path2D();
+
+		const rect = ori == 0 ? rectH : rectV;
+
+		let prevGapEnd = plotLft;
+
+		for (let i = 0; i < gaps.length; i++) {
+			let g = gaps[i];
+
+			if (g[1] > g[0]) {
+				let w = g[0] - prevGapEnd;
+
+				w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+
+				prevGapEnd = g[1];
+			}
+		}
+
+		let w = plotLft + plotWid - prevGapEnd;
+
+		w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+	}
+
+	return clip;
+}
+
+function addGap(gaps, fromX, toX) {
+	let prevGap = gaps[gaps.length - 1];
+
+	if (prevGap && prevGap[0] == fromX)			// TODO: gaps must be encoded at stroke widths?
+		prevGap[1] = toX;
+	else
+		gaps.push([fromX, toX]);
+}
+
+function pxRoundGen(pxAlign) {
+	return pxAlign == 0 ? retArg0 : pxAlign == 1 ? round : v => incrRound(v, pxAlign);
+}
+
+function rect(ori) {
+	let moveTo = ori == 0 ?
+		moveToH :
+		moveToV;
+
+	let arcTo = ori == 0 ?
+		(p, x1, y1, x2, y2, r) => { p.arcTo(x1, y1, x2, y2, r); } :
+		(p, y1, x1, y2, x2, r) => { p.arcTo(x1, y1, x2, y2, r); };
+
+	let rect = ori == 0 ?
+		(p, x, y, w, h) => { p.rect(x, y, w, h); } :
+		(p, y, x, h, w) => { p.rect(x, y, w, h); };
+
+	return (p, x, y, w, h, r = 0) => {
+		if (r == 0)
+			rect(p, x, y, w, h);
+		else {
+			r = min(r, w / 2, h / 2);
+
+			// adapted from https://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-using-html-canvas/7838871#7838871
+			moveTo(p, x + r, y);
+			arcTo(p, x + w, y, x + w, y + h, r);
+			arcTo(p, x + w, y + h, x, y + h, r);
+			arcTo(p, x, y + h, x, y, r);
+			arcTo(p, x, y, x + w, y, r);
+			p.closePath();
+		}
+	};
+}
+
+// orientation-inverting canvas functions
+const moveToH = (p, x, y) => { p.moveTo(x, y); };
+const moveToV = (p, y, x) => { p.moveTo(x, y); };
+const lineToH = (p, x, y) => { p.lineTo(x, y); };
+const lineToV = (p, y, x) => { p.lineTo(x, y); };
+const rectH = rect(0);
+const rectV = rect(1);
+const arcH = (p, x, y, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+const arcV = (p, y, x, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+const bezierCurveToH = (p, bp1x, bp1y, bp2x, bp2y, p2x, p2y) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+const bezierCurveToV = (p, bp1y, bp1x, bp2y, bp2x, p2y, p2x) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+
+// TODO: drawWrap(seriesIdx, drawPoints) (save, restore, translate, clip)
+function points(opts) {
+	return (u, seriesIdx, idx0, idx1, filtIdxs) => {
+	//	log("drawPoints()", arguments);
+
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let { pxRound, points } = series;
+
+			let moveTo, arc;
+
+			if (scaleX.ori == 0) {
+				moveTo = moveToH;
+				arc = arcH;
+			}
+			else {
+				moveTo = moveToV;
+				arc = arcV;
+			}
+
+			const width = roundDec(points.width * pxRatio, 3);
+
+			let rad = (points.size - points.width) / 2 * pxRatio;
+			let dia = roundDec(rad * 2, 3);
+
+			let fill = new Path2D();
+			let clip = new Path2D();
+
+			let { left: lft, top: top, width: wid, height: hgt } = u.bbox;
+
+			rectH(clip,
+				lft - dia,
+				top - dia,
+				wid + dia * 2,
+				hgt + dia * 2,
+			);
+
+			const drawPoint = pi => {
+				if (dataY[pi] != null) {
+					let x = pxRound(valToPosX(dataX[pi], scaleX, xDim, xOff));
+					let y = pxRound(valToPosY(dataY[pi], scaleY, yDim, yOff));
+
+					moveTo(fill, x + rad, y);
+					arc(fill, x, y, rad, 0, PI * 2);
+				}
+			};
+
+			if (filtIdxs)
+				filtIdxs.forEach(drawPoint);
+			else {
+				for (let pi = idx0; pi <= idx1; pi++)
+					drawPoint(pi);
+			}
+
+			return {
+				stroke: width > 0 ? fill : null,
+				fill,
+				clip,
+				flags: BAND_CLIP_FILL | BAND_CLIP_STROKE,
+			};
+		});
+	};
+}
+
+function _drawAcc(lineTo) {
+	return (stroke, accX, minY, maxY, inY, outY) => {
+		if (minY != maxY) {
+			if (inY != minY && outY != minY)
+				lineTo(stroke, accX, minY);
+			if (inY != maxY && outY != maxY)
+				lineTo(stroke, accX, maxY);
+
+			lineTo(stroke, accX, outY);
+		}
+	};
+}
+
+const drawAccH = _drawAcc(lineToH);
+const drawAccV = _drawAcc(lineToV);
+
+function linear() {
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let lineTo, drawAcc;
+
+			if (scaleX.ori == 0) {
+				lineTo = lineToH;
+				drawAcc = drawAccH;
+			}
+			else {
+				lineTo = lineToV;
+				drawAcc = drawAccV;
+			}
+
+			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			let minY = inf,
+				maxY = -inf,
+				inY, outY, outX, drawnAtX;
+
+			let gaps = [];
+
+			let accX = pxRound(valToPosX(dataX[dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let accGaps = false;
+			let prevYNull = false;
+
+			// data edges
+			let lftIdx = nonNullIdx(dataY, idx0, idx1,  1 * dir);
+			let rgtIdx = nonNullIdx(dataY, idx0, idx1, -1 * dir);
+			let lftX =  pxRound(valToPosX(dataX[lftIdx], scaleX, xDim, xOff));
+			let rgtX =  pxRound(valToPosX(dataX[rgtIdx], scaleX, xDim, xOff));
+
+			if (lftX > xOff)
+				addGap(gaps, xOff, lftX);
+
+			for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+				let x = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+				if (x == accX) {
+					if (dataY[i] != null) {
+						outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+
+						if (minY == inf) {
+							lineTo(stroke, x, outY);
+							inY = outY;
+						}
+
+						minY = min(outY, minY);
+						maxY = max(outY, maxY);
+					}
+					else if (dataY[i] === null)
+						accGaps = prevYNull = true;
+				}
+				else {
+					let _addGap = false;
+
+					if (minY != inf) {
+						drawAcc(stroke, accX, minY, maxY, inY, outY);
+						outX = drawnAtX = accX;
+					}
+					else if (accGaps) {
+						_addGap = true;
+						accGaps = false;
+					}
+
+					if (dataY[i] != null) {
+						outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+						lineTo(stroke, x, outY);
+						minY = maxY = inY = outY;
+
+						// prior pixel can have data but still start a gap if ends with null
+						if (prevYNull && x - accX > 1)
+							_addGap = true;
+
+						prevYNull = false;
+					}
+					else {
+						minY = inf;
+						maxY = -inf;
+
+						if (dataY[i] === null) {
+							accGaps = true;
+
+							if (x - accX > 1)
+								_addGap = true;
+						}
+					}
+
+					_addGap && addGap(gaps, outX, x);
+
+					accX = x;
+				}
+			}
+
+			if (minY != inf && minY != maxY && drawnAtX != accX)
+				drawAcc(stroke, accX, minY, maxY, inY, outY);
+
+			if (rgtX < xOff + xDim)
+				addGap(gaps, rgtX, xOff + xDim);
+
+			if (series.fill != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = pxRound(valToPosY(series.fillTo(u, seriesIdx, series.min, series.max), scaleY, yDim, yOff));
+
+				lineTo(fill, rgtX, fillTo);
+				lineTo(fill, lftX, fillTo);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+		});
+	};
+}
+
+function stepped(opts) {
+	const align = ifNull(opts.align, 1);
+	// whether to draw ascenders/descenders at null/gap bondaries
+	const ascDesc = ifNull(opts.ascDesc, false);
+
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+			const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+			let gaps = [];
+			let inGap = false;
+			let prevYPos  = pxRound(valToPosY(dataY[_dir == 1 ? idx0 : idx1], scaleY, yDim, yOff));
+			let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let prevXPos = firstXPos;
+
+			lineTo(stroke, firstXPos, prevYPos);
+
+			for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+				let yVal1 = dataY[i];
+
+				let x1 = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+				if (yVal1 == null) {
+					if (yVal1 === null) {
+						addGap(gaps, prevXPos, x1);
+						inGap = true;
+					}
+					continue;
+				}
+
+				let y1 = pxRound(valToPosY(yVal1, scaleY, yDim, yOff));
+
+				if (inGap) {
+					addGap(gaps, prevXPos, x1);
+					inGap = false;
+				}
+
+				if (align == 1)
+					lineTo(stroke, x1, prevYPos);
+				else
+					lineTo(stroke, prevXPos, y1);
+
+				lineTo(stroke, x1, y1);
+
+				prevYPos = y1;
+				prevXPos = x1;
+			}
+
+			if (series.fill != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+				let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+				lineTo(fill, prevXPos, minY);
+				lineTo(fill, firstXPos, minY);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			// expand/contract clips for ascenders/descenders
+			let halfStroke = (series.width * pxRatio) / 2;
+			let startsOffset = (ascDesc || align ==  1) ?  halfStroke : -halfStroke;
+			let endsOffset   = (ascDesc || align == -1) ? -halfStroke :  halfStroke;
+
+			gaps.forEach(g => {
+				g[0] += startsOffset;
+				g[1] += endsOffset;
+			});
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+		});
+	};
+}
+
+function bars(opts) {
+	opts = opts || EMPTY_OBJ;
+	const size = ifNull(opts.size, [0.6, inf, 1]);
+	const align = opts.align || 0;
+	const extraGap = (opts.gap || 0) * pxRatio;
+
+	const radius = ifNull(opts.radius, 0);
+
+	const gapFactor = 1 - size[0];
+	const maxWidth  = ifNull(size[1], inf) * pxRatio;
+	const minWidth  = ifNull(size[2], 1) * pxRatio;
+
+	const disp = ifNull(opts.disp, EMPTY_OBJ);
+	const _each = ifNull(opts.each, _ => {});
+
+	const { fill: dispFills, stroke: dispStrokes } = disp;
+
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			const _dirX = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+			const _dirY = scaleY.dir * (scaleY.ori == 1 ? 1 : -1);
+
+			let rect = scaleX.ori == 0 ? rectH : rectV;
+
+			let each = scaleX.ori == 0 ? _each : (u, seriesIdx, i, top, lft, hgt, wid) => {
+				_each(u, seriesIdx, i, lft, top, wid, hgt);
+			};
+
+			let fillToY = series.fillTo(u, seriesIdx, series.min, series.max);
+
+			let y0Pos = valToPosY(fillToY, scaleY, yDim, yOff);
+
+			// barWid is to center of stroke
+			let xShift, barWid;
+
+			let strokeWidth = pxRound(series.width * pxRatio);
+
+			let multiPath = false;
+
+			let fillColors = null;
+			let fillPaths = null;
+			let strokeColors = null;
+			let strokePaths = null;
+
+			if (dispFills != null && dispStrokes != null) {
+				multiPath = true;
+
+				fillColors = dispFills.values(u, seriesIdx, idx0, idx1);
+				fillPaths = new Map();
+				(new Set(fillColors)).forEach(color => {
+					if (color != null)
+						fillPaths.set(color, new Path2D());
+				});
+
+				strokeColors = dispStrokes.values(u, seriesIdx, idx0, idx1);
+				strokePaths = new Map();
+				(new Set(strokeColors)).forEach(color => {
+					if (color != null)
+						strokePaths.set(color, new Path2D());
+				});
+			}
+
+			let { x0, size } = disp;
+
+			if (x0 != null && size != null) {
+				dataX = x0.values(u, seriesIdx, idx0, idx1);
+
+				if (x0.unit == 2)
+					dataX = dataX.map(pct => u.posToVal(xOff + pct * xDim, scaleX.key, true));
+
+				// assumes uniform sizes, for now
+				let sizes = size.values(u, seriesIdx, idx0, idx1);
+
+				if (size.unit == 2)
+					barWid = sizes[0] * xDim;
+				else
+					barWid = valToPosX(sizes[0], scaleX, xDim, xOff) - valToPosX(0, scaleX, xDim, xOff); // assumes linear scale (delta from 0)
+
+				barWid = pxRound(barWid - strokeWidth);
+
+				xShift = (_dirX == 1 ? -strokeWidth / 2 : barWid + strokeWidth / 2);
+			}
+			else {
+				let colWid = xDim;
+
+				if (dataX.length > 1) {
+					// prior index with non-undefined y data
+					let prevIdx = null;
+
+					// scan full dataset for smallest adjacent delta
+					// will not work properly for non-linear x scales, since does not do expensive valToPosX calcs till end
+					for (let i = 0, minDelta = Infinity; i < dataX.length; i++) {
+						if (dataY[i] !== undefined) {
+							if (prevIdx != null) {
+								let delta = abs(dataX[i] - dataX[prevIdx]);
+
+								if (delta < minDelta) {
+									minDelta = delta;
+									colWid = abs(valToPosX(dataX[i], scaleX, xDim, xOff) - valToPosX(dataX[prevIdx], scaleX, xDim, xOff));
+								}
+							}
+
+							prevIdx = i;
+						}
+					}
+				}
+
+				let gapWid = colWid * gapFactor;
+
+				barWid = pxRound(min(maxWidth, max(minWidth, colWid - gapWid)) - strokeWidth - extraGap);
+
+				xShift = (align == 0 ? barWid / 2 : align == _dirX ? 0 : barWid) - align * _dirX * extraGap / 2;
+			}
+
+			const _paths = {stroke: null, fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL | BAND_CLIP_STROKE};  // disp, geom
+
+			const hasBands = u.bands.length > 0;
+			let yLimit;
+
+			if (hasBands) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = new Path2D();
+				yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+			}
+
+			const stroke = multiPath ? null : new Path2D();
+			const band = _paths.band;
+
+			for (let i = _dirX == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dirX) {
+				let yVal = dataY[i];
+
+			/*
+				// interpolate upwards band clips
+				if (yVal == null) {
+				//	if (hasBands)
+				//		yVal = costlyLerp(i, idx0, idx1, _dirX, dataY);
+				//	else
+						continue;
+				}
+			*/
+
+				let xVal = scaleX.distr != 2 || disp != null ? dataX[i] : i;
+
+				// TODO: all xPos can be pre-computed once for all series in aligned set
+				let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+				let yPos = valToPosY(ifNull(yVal, fillToY) , scaleY, yDim, yOff);
+
+				let lft = pxRound(xPos - xShift);
+				let btm = pxRound(max(yPos, y0Pos));
+				let top = pxRound(min(yPos, y0Pos));
+				// this includes the stroke
+				let barHgt = btm - top;
+
+				let r = radius * barWid;
+
+				if (yVal != null) {  // && yVal != fillToY (0 height bar)
+					if (multiPath) {
+						if (strokeWidth > 0 && strokeColors[i] != null)
+							rect(strokePaths.get(strokeColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+						if (fillColors[i] != null)
+							rect(fillPaths.get(fillColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+					}
+					else
+						rect(stroke, lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+					each(u, seriesIdx, i,
+						lft    - strokeWidth / 2,
+						top,
+						barWid + strokeWidth,
+						barHgt,
+					);
+				}
+
+				if (hasBands) {
+					if (_dirY == 1) {
+						btm = top;
+						top = yLimit;
+					}
+					else {
+						top = btm;
+						btm = yLimit;
+					}
+
+					barHgt = btm - top;
+
+					rect(band, lft - strokeWidth / 2, top, barWid + strokeWidth, max(0, barHgt), 0);
+				}
+			}
+
+			if (strokeWidth > 0)
+				_paths.stroke = multiPath ? strokePaths : stroke;
+
+			_paths.fill = multiPath ? fillPaths : stroke;
+
+			return _paths;
+		});
+	};
+}
+
+function splineInterp(interp, opts) {
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let moveTo, bezierCurveTo, lineTo;
+
+			if (scaleX.ori == 0) {
+				moveTo = moveToH;
+				lineTo = lineToH;
+				bezierCurveTo = bezierCurveToH;
+			}
+			else {
+				moveTo = moveToV;
+				lineTo = lineToV;
+				bezierCurveTo = bezierCurveToV;
+			}
+
+			const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+			let gaps = [];
+			let inGap = false;
+			let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let prevXPos = firstXPos;
+
+			let xCoords = [];
+			let yCoords = [];
+
+			for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+				let yVal = dataY[i];
+				let xVal = dataX[i];
+				let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+
+				if (yVal == null) {
+					if (yVal === null) {
+						addGap(gaps, prevXPos, xPos);
+						inGap = true;
+					}
+					continue;
+				}
+				else {
+					if (inGap) {
+						addGap(gaps, prevXPos, xPos);
+						inGap = false;
+					}
+
+					xCoords.push((prevXPos = xPos));
+					yCoords.push(valToPosY(dataY[i], scaleY, yDim, yOff));
+				}
+			}
+
+			const _paths = {stroke: interp(xCoords, yCoords, moveTo, lineTo, bezierCurveTo, pxRound), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			if (series.fill != null && stroke != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+				let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+				lineTo(fill, prevXPos, minY);
+				lineTo(fill, firstXPos, minY);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+
+			//  if FEAT_PATHS: false in rollup.config.js
+			//	u.ctx.save();
+			//	u.ctx.beginPath();
+			//	u.ctx.rect(u.bbox.left, u.bbox.top, u.bbox.width, u.bbox.height);
+			//	u.ctx.clip();
+			//	u.ctx.strokeStyle = u.series[sidx].stroke;
+			//	u.ctx.stroke(stroke);
+			//	u.ctx.fillStyle = u.series[sidx].fill;
+			//	u.ctx.fill(fill);
+			//	u.ctx.restore();
+			//	return null;
+		});
+	};
+}
+
+function monotoneCubic(opts) {
+	return splineInterp(_monotoneCubic);
+}
+
+// Monotone Cubic Spline interpolation, adapted from the Chartist.js implementation:
+// https://github.com/gionkunz/chartist-js/blob/e7e78201bffe9609915e5e53cfafa29a5d6c49f9/src/scripts/interpolation.js#L240-L369
+function _monotoneCubic(xs, ys, moveTo, lineTo, bezierCurveTo, pxRound) {
+	const n = xs.length;
+
+	if (n < 2)
+		return null;
+
+	const path = new Path2D();
+
+	moveTo(path, xs[0], ys[0]);
+
+	if (n == 2)
+		lineTo(path, xs[1], ys[1]);
+	else {
+		let ms  = Array(n),
+			ds  = Array(n - 1),
+			dys = Array(n - 1),
+			dxs = Array(n - 1);
+
+		// calc deltas and derivative
+		for (let i = 0; i < n - 1; i++) {
+			dys[i] = ys[i + 1] - ys[i];
+			dxs[i] = xs[i + 1] - xs[i];
+			ds[i]  = dys[i] / dxs[i];
+		}
+
+		// determine desired slope (m) at each point using Fritsch-Carlson method
+		// http://math.stackexchange.com/questions/45218/implementation-of-monotone-cubic-interpolation
+		ms[0] = ds[0];
+
+		for (let i = 1; i < n - 1; i++) {
+			if (ds[i] === 0 || ds[i - 1] === 0 || (ds[i - 1] > 0) !== (ds[i] > 0))
+				ms[i] = 0;
+			else {
+				ms[i] = 3 * (dxs[i - 1] + dxs[i]) / (
+					(2 * dxs[i] + dxs[i - 1]) / ds[i - 1] +
+					(dxs[i] + 2 * dxs[i - 1]) / ds[i]
+				);
+
+				if (!isFinite(ms[i]))
+					ms[i] = 0;
+			}
+		}
+
+		ms[n - 1] = ds[n - 2];
+
+		for (let i = 0; i < n - 1; i++) {
+			bezierCurveTo(
+				path,
+				xs[i] + dxs[i] / 3,
+				ys[i] + ms[i] * dxs[i] / 3,
+				xs[i + 1] - dxs[i] / 3,
+				ys[i + 1] - ms[i + 1] * dxs[i] / 3,
+				xs[i + 1],
+				ys[i + 1],
+			);
+		}
+	}
+
+	return path;
+}
+
+const cursorPlots = new Set();
+
+function invalidateRects() {
+	cursorPlots.forEach(u => {
+		u.syncRect(true);
+	});
+}
+
+on(resize, win, invalidateRects);
+on(scroll, win, invalidateRects, true);
+
+const linearPath = linear() ;
+const pointsPath = points() ;
+
+function setDefaults(d, xo, yo, initY) {
+	let d2 = initY ? [d[0], d[1]].concat(d.slice(2)) : [d[0]].concat(d.slice(1));
+	return d2.map((o, i) => setDefault(o, i, xo, yo));
+}
+
+function setDefaults2(d, xyo) {
+	return d.map((o, i) => i == 0 ? null : assign({}, xyo, o));  // todo: assign() will not merge facet arrays
+}
+
+function setDefault(o, i, xo, yo) {
+	return assign({}, (i == 0 ? xo : yo), o);
+}
+
+function snapNumX(self, dataMin, dataMax) {
+	return dataMin == null ? nullNullTuple : [dataMin, dataMax];
+}
+
+const snapTimeX = snapNumX;
+
+// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+function snapNumY(self, dataMin, dataMax) {
+	return dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, rangePad, true);
+}
+
+function snapLogY(self, dataMin, dataMax, scale) {
+	return dataMin == null ? nullNullTuple : rangeLog(dataMin, dataMax, self.scales[scale].log, false);
+}
+
+const snapLogX = snapLogY;
+
+function snapAsinhY(self, dataMin, dataMax, scale) {
+	return dataMin == null ? nullNullTuple : rangeAsinh(dataMin, dataMax, self.scales[scale].log, false);
+}
+
+const snapAsinhX = snapAsinhY;
+
+// dim is logical (getClientBoundingRect) pixels, not canvas pixels
+function findIncr(minVal, maxVal, incrs, dim, minSpace) {
+	let intDigits = max(numIntDigits(minVal), numIntDigits(maxVal));
+
+	let delta = maxVal - minVal;
+
+	let incrIdx = closestIdx((minSpace / dim) * delta, incrs);
+
+	do {
+		let foundIncr = incrs[incrIdx];
+		let foundSpace = dim * foundIncr / delta;
+
+		if (foundSpace >= minSpace && intDigits + (foundIncr < 5 ? fixedDec.get(foundIncr) : 0) <= 17)
+			return [foundIncr, foundSpace];
+	} while (++incrIdx < incrs.length);
+
+	return [0, 0];
+}
+
+function pxRatioFont(font) {
+	let fontSize, fontSizeCss;
+	font = font.replace(/(\d+)px/, (m, p1) => (fontSize = round((fontSizeCss = +p1) * pxRatio)) + 'px');
+	return [font, fontSize, fontSizeCss];
+}
+
+function syncFontSize(axis) {
+	if (axis.show) {
+		[axis.font, axis.labelFont].forEach(f => {
+			let size = roundDec(f[2] * pxRatio, 1);
+			f[0] = f[0].replace(/[0-9.]+px/, size + 'px');
+			f[1] = size;
+		});
+	}
+}
+
+function uPlot(opts, data, then) {
+	const self = {
+		mode: ifNull(opts.mode, 1),
+	};
+
+	const mode = self.mode;
+
+	// TODO: cache denoms & mins scale.cache = {r, min, }
+	function getValPct(val, scale) {
+		let _val = (
+			scale.distr == 3 ? log10(val > 0 ? val : scale.clamp(self, val, scale.min, scale.max, scale.key)) :
+			scale.distr == 4 ? asinh(val, scale.asinh) :
+			val
+		);
+
+		return (_val - scale._min) / (scale._max - scale._min);
+	}
+
+	function getHPos(val, scale, dim, off) {
+		let pct = getValPct(val, scale);
+		return off + dim * (scale.dir == -1 ? (1 - pct) : pct);
+	}
+
+	function getVPos(val, scale, dim, off) {
+		let pct = getValPct(val, scale);
+		return off + dim * (scale.dir == -1 ? pct : (1 - pct));
+	}
+
+	function getPos(val, scale, dim, off) {
+		return scale.ori == 0 ? getHPos(val, scale, dim, off) : getVPos(val, scale, dim, off);
+	}
+
+	self.valToPosH = getHPos;
+	self.valToPosV = getVPos;
+
+	let ready = false;
+	self.status = 0;
+
+	const root = self.root = placeDiv(UPLOT);
+
+	if (opts.id != null)
+		root.id = opts.id;
+
+	addClass(root, opts.class);
+
+	if (opts.title) {
+		let title = placeDiv(TITLE, root);
+		title.textContent = opts.title;
+	}
+
+	const can = placeTag("canvas");
+	const ctx = self.ctx = can.getContext("2d");
+
+	const wrap = placeDiv(WRAP, root);
+	const under = self.under = placeDiv(UNDER, wrap);
+	wrap.appendChild(can);
+	const over = self.over = placeDiv(OVER, wrap);
+
+	opts = copy(opts);
+
+	const pxAlign = +ifNull(opts.pxAlign, 1);
+
+	const pxRound = pxRoundGen(pxAlign);
+
+	(opts.plugins || []).forEach(p => {
+		if (p.opts)
+			opts = p.opts(self, opts) || opts;
+	});
+
+	const ms = opts.ms || 1e-3;
+
+	const series  = self.series = mode == 1 ?
+		setDefaults(opts.series || [], xSeriesOpts, ySeriesOpts, false) :
+		setDefaults2(opts.series || [null], xySeriesOpts);
+	const axes    = self.axes   = setDefaults(opts.axes   || [], xAxisOpts,   yAxisOpts,    true);
+	const scales  = self.scales = {};
+	const bands   = self.bands  = opts.bands || [];
+
+	bands.forEach(b => {
+		b.fill = fnOrSelf(b.fill || null);
+	});
+
+	const xScaleKey = mode == 2 ? series[1].facets[0].scale : series[0].scale;
+
+	const drawOrderMap = {
+		axes: drawAxesGrid,
+		series: drawSeries,
+	};
+
+	const drawOrder = (opts.drawOrder || ["axes", "series"]).map(key => drawOrderMap[key]);
+
+	function initScale(scaleKey) {
+		let sc = scales[scaleKey];
+
+		if (sc == null) {
+			let scaleOpts = (opts.scales || EMPTY_OBJ)[scaleKey] || EMPTY_OBJ;
+
+			if (scaleOpts.from != null) {
+				// ensure parent is initialized
+				initScale(scaleOpts.from);
+				// dependent scales inherit
+				scales[scaleKey] = assign({}, scales[scaleOpts.from], scaleOpts, {key: scaleKey});
+			}
+			else {
+				sc = scales[scaleKey] = assign({}, (scaleKey == xScaleKey ? xScaleOpts : yScaleOpts), scaleOpts);
+
+				if (mode == 2)
+					sc.time = false;
+
+				sc.key = scaleKey;
+
+				let isTime = sc.time;
+
+				let rn = sc.range;
+
+				let rangeIsArr = isArr(rn);
+
+				if (scaleKey != xScaleKey || mode == 2) {
+					// if range array has null limits, it should be auto
+					if (rangeIsArr && (rn[0] == null || rn[1] == null)) {
+						rn = {
+							min: rn[0] == null ? autoRangePart : {
+								mode: 1,
+								hard: rn[0],
+								soft: rn[0],
+							},
+							max: rn[1] == null ? autoRangePart : {
+								mode: 1,
+								hard: rn[1],
+								soft: rn[1],
+							},
+						};
+						rangeIsArr = false;
+					}
+
+					if (!rangeIsArr && isObj(rn)) {
+						let cfg = rn;
+						// this is similar to snapNumY
+						rn = (self, dataMin, dataMax) => dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, cfg);
+					}
+				}
+
+				sc.range = fnOrSelf(rn || (isTime ? snapTimeX : scaleKey == xScaleKey ?
+					(sc.distr == 3 ? snapLogX : sc.distr == 4 ? snapAsinhX : snapNumX) :
+					(sc.distr == 3 ? snapLogY : sc.distr == 4 ? snapAsinhY : snapNumY)
+				));
+
+				sc.auto = fnOrSelf(rangeIsArr ? false : sc.auto);
+
+				sc.clamp = fnOrSelf(sc.clamp || clampScale);
+
+				// caches for expensive ops like asinh() & log()
+				sc._min = sc._max = null;
+			}
+		}
+	}
+
+	initScale("x");
+	initScale("y");
+
+	// TODO: init scales from facets in mode: 2
+	if (mode == 1) {
+		series.forEach(s => {
+			initScale(s.scale);
+		});
+	}
+
+	axes.forEach(a => {
+		initScale(a.scale);
+	});
+
+	for (let k in opts.scales)
+		initScale(k);
+
+	const scaleX = scales[xScaleKey];
+
+	const xScaleDistr = scaleX.distr;
+
+	let valToPosX, valToPosY;
+
+	if (scaleX.ori == 0) {
+		addClass(root, ORI_HZ);
+		valToPosX = getHPos;
+		valToPosY = getVPos;
+		/*
+		updOriDims = () => {
+			xDimCan = plotWid;
+			xOffCan = plotLft;
+			yDimCan = plotHgt;
+			yOffCan = plotTop;
+
+			xDimCss = plotWidCss;
+			xOffCss = plotLftCss;
+			yDimCss = plotHgtCss;
+			yOffCss = plotTopCss;
+		};
+		*/
+	}
+	else {
+		addClass(root, ORI_VT);
+		valToPosX = getVPos;
+		valToPosY = getHPos;
+		/*
+		updOriDims = () => {
+			xDimCan = plotHgt;
+			xOffCan = plotTop;
+			yDimCan = plotWid;
+			yOffCan = plotLft;
+
+			xDimCss = plotHgtCss;
+			xOffCss = plotTopCss;
+			yDimCss = plotWidCss;
+			yOffCss = plotLftCss;
+		};
+		*/
+	}
+
+	const pendScales = {};
+
+	// explicitly-set initial scales
+	for (let k in scales) {
+		let sc = scales[k];
+
+		if (sc.min != null || sc.max != null) {
+			pendScales[k] = {min: sc.min, max: sc.max};
+			sc.min = sc.max = null;
+		}
+	}
+
+//	self.tz = opts.tz || Intl.DateTimeFormat().resolvedOptions().timeZone;
+	const _tzDate  = (opts.tzDate || (ts => new Date(round(ts / ms))));
+	const _fmtDate = (opts.fmtDate || fmtDate);
+
+	const _timeAxisSplits = (ms == 1 ? timeAxisSplitsMs(_tzDate) : timeAxisSplitsS(_tzDate));
+	const _timeAxisVals   = timeAxisVals(_tzDate, timeAxisStamps((ms == 1 ? _timeAxisStampsMs : _timeAxisStampsS), _fmtDate));
+	const _timeSeriesVal  = timeSeriesVal(_tzDate, timeSeriesStamp(_timeSeriesStamp, _fmtDate));
+
+	const activeIdxs = [];
+
+	const legend     = (self.legend = assign({}, legendOpts, opts.legend));
+	const showLegend = legend.show;
+	const markers    = legend.markers;
+
+	{
+		legend.idxs = activeIdxs;
+
+		markers.width  = fnOrSelf(markers.width);
+		markers.dash   = fnOrSelf(markers.dash);
+		markers.stroke = fnOrSelf(markers.stroke);
+		markers.fill   = fnOrSelf(markers.fill);
+	}
+
+	let legendEl;
+	let legendRows = [];
+	let legendCells = [];
+	let legendCols;
+	let multiValLegend = false;
+	let NULL_LEGEND_VALUES = {};
+
+	if (legend.live) {
+		const getMultiVals = series[1] ? series[1].values : null;
+		multiValLegend = getMultiVals != null;
+		legendCols = multiValLegend ? getMultiVals(self, 1, 0) : {_: 0};
+
+		for (let k in legendCols)
+			NULL_LEGEND_VALUES[k] = "--";
+	}
+
+	if (showLegend) {
+		legendEl = placeTag("table", LEGEND, root);
+
+		if (multiValLegend) {
+			let head = placeTag("tr", LEGEND_THEAD, legendEl);
+			placeTag("th", null, head);
+
+			for (var key in legendCols)
+				placeTag("th", LEGEND_LABEL, head).textContent = key;
+		}
+		else {
+			addClass(legendEl, LEGEND_INLINE);
+			legend.live && addClass(legendEl, LEGEND_LIVE);
+		}
+	}
+
+	const son  = {show: true};
+	const soff = {show: false};
+
+	function initLegendRow(s, i) {
+		if (i == 0 && (multiValLegend || !legend.live || mode == 2))
+			return nullNullTuple;
+
+		let cells = [];
+
+		let row = placeTag("tr", LEGEND_SERIES, legendEl, legendEl.childNodes[i]);
+
+		addClass(row, s.class);
+
+		if (!s.show)
+			addClass(row, OFF);
+
+		let label = placeTag("th", null, row);
+
+		if (markers.show) {
+			let indic = placeDiv(LEGEND_MARKER, label);
+
+			if (i > 0) {
+				let width  = markers.width(self, i);
+
+				if (width)
+					indic.style.border = width + "px " + markers.dash(self, i) + " " + markers.stroke(self, i);
+
+				indic.style.background = markers.fill(self, i);
+			}
+		}
+
+		let text = placeDiv(LEGEND_LABEL, label);
+		text.textContent = s.label;
+
+		if (i > 0) {
+			if (!markers.show)
+				text.style.color = s.width > 0 ? markers.stroke(self, i) : markers.fill(self, i);
+
+			onMouse("click", label, e => {
+				if (cursor._lock)
+					return;
+
+				let seriesIdx = series.indexOf(s);
+
+				if ((e.ctrlKey || e.metaKey) != legend.isolate) {
+					// if any other series is shown, isolate this one. else show all
+					let isolate = series.some((s, i) => i > 0 && i != seriesIdx && s.show);
+
+					series.forEach((s, i) => {
+						i > 0 && setSeries(i, isolate ? (i == seriesIdx ? son : soff) : son, true, syncOpts.setSeries);
+					});
+				}
+				else
+					setSeries(seriesIdx, {show: !s.show}, true, syncOpts.setSeries);
+			});
+
+			if (cursorFocus) {
+				onMouse(mouseenter, label, e => {
+					if (cursor._lock)
+						return;
+
+					setSeries(series.indexOf(s), FOCUS_TRUE, true, syncOpts.setSeries);
+				});
+			}
+		}
+
+		for (var key in legendCols) {
+			let v = placeTag("td", LEGEND_VALUE, row);
+			v.textContent = "--";
+			cells.push(v);
+		}
+
+		return [row, cells];
+	}
+
+	const mouseListeners = new Map();
+
+	function onMouse(ev, targ, fn) {
+		const targListeners = mouseListeners.get(targ) || {};
+		const listener = cursor.bind[ev](self, targ, fn);
+
+		if (listener) {
+			on(ev, targ, targListeners[ev] = listener);
+			mouseListeners.set(targ, targListeners);
+		}
+	}
+
+	function offMouse(ev, targ, fn) {
+		const targListeners = mouseListeners.get(targ) || {};
+
+		for (let k in targListeners) {
+			if (ev == null || k == ev) {
+				off(k, targ, targListeners[k]);
+				delete targListeners[k];
+			}
+		}
+
+		if (ev == null)
+			mouseListeners.delete(targ);
+	}
+
+	let fullWidCss = 0;
+	let fullHgtCss = 0;
+
+	let plotWidCss = 0;
+	let plotHgtCss = 0;
+
+	// plot margins to account for axes
+	let plotLftCss = 0;
+	let plotTopCss = 0;
+
+	let plotLft = 0;
+	let plotTop = 0;
+	let plotWid = 0;
+	let plotHgt = 0;
+
+	self.bbox = {};
+
+	let shouldSetScales = false;
+	let shouldSetSize = false;
+	let shouldConvergeSize = false;
+	let shouldSetCursor = false;
+	let shouldSetLegend = false;
+
+	function _setSize(width, height, force) {
+		if (force || (width != self.width || height != self.height))
+			calcSize(width, height);
+
+		resetYSeries(false);
+
+		shouldConvergeSize = true;
+		shouldSetSize = true;
+		shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+		commit();
+	}
+
+	function calcSize(width, height) {
+	//	log("calcSize()", arguments);
+
+		self.width  = fullWidCss = plotWidCss = width;
+		self.height = fullHgtCss = plotHgtCss = height;
+		plotLftCss  = plotTopCss = 0;
+
+		calcPlotRect();
+		calcAxesRects();
+
+		let bb = self.bbox;
+
+		plotLft = bb.left   = incrRound(plotLftCss * pxRatio, 0.5);
+		plotTop = bb.top    = incrRound(plotTopCss * pxRatio, 0.5);
+		plotWid = bb.width  = incrRound(plotWidCss * pxRatio, 0.5);
+		plotHgt = bb.height = incrRound(plotHgtCss * pxRatio, 0.5);
+
+	//	updOriDims();
+	}
+
+	// ensures size calc convergence
+	const CYCLE_LIMIT = 3;
+
+	function convergeSize() {
+		let converged = false;
+
+		let cycleNum = 0;
+
+		while (!converged) {
+			cycleNum++;
+
+			let axesConverged = axesCalc(cycleNum);
+			let paddingConverged = paddingCalc(cycleNum);
+
+			converged = cycleNum == CYCLE_LIMIT || (axesConverged && paddingConverged);
+
+			if (!converged) {
+				calcSize(self.width, self.height);
+				shouldSetSize = true;
+			}
+		}
+	}
+
+	function setSize({width, height}) {
+		_setSize(width, height);
+	}
+
+	self.setSize = setSize;
+
+	// accumulate axis offsets, reduce canvas width
+	function calcPlotRect() {
+		// easements for edge labels
+		let hasTopAxis = false;
+		let hasBtmAxis = false;
+		let hasRgtAxis = false;
+		let hasLftAxis = false;
+
+		axes.forEach((axis, i) => {
+			if (axis.show && axis._show) {
+				let {side, _size} = axis;
+				let isVt = side % 2;
+				let labelSize = axis.label != null ? axis.labelSize : 0;
+
+				let fullSize = _size + labelSize;
+
+				if (fullSize > 0) {
+					if (isVt) {
+						plotWidCss -= fullSize;
+
+						if (side == 3) {
+							plotLftCss += fullSize;
+							hasLftAxis = true;
+						}
+						else
+							hasRgtAxis = true;
+					}
+					else {
+						plotHgtCss -= fullSize;
+
+						if (side == 0) {
+							plotTopCss += fullSize;
+							hasTopAxis = true;
+						}
+						else
+							hasBtmAxis = true;
+					}
+				}
+			}
+		});
+
+		sidesWithAxes[0] = hasTopAxis;
+		sidesWithAxes[1] = hasRgtAxis;
+		sidesWithAxes[2] = hasBtmAxis;
+		sidesWithAxes[3] = hasLftAxis;
+
+		// hz padding
+		plotWidCss -= _padding[1] + _padding[3];
+		plotLftCss += _padding[3];
+
+		// vt padding
+		plotHgtCss -= _padding[2] + _padding[0];
+		plotTopCss += _padding[0];
+	}
+
+	function calcAxesRects() {
+		// will accum +
+		let off1 = plotLftCss + plotWidCss;
+		let off2 = plotTopCss + plotHgtCss;
+		// will accum -
+		let off3 = plotLftCss;
+		let off0 = plotTopCss;
+
+		function incrOffset(side, size) {
+			switch (side) {
+				case 1: off1 += size; return off1 - size;
+				case 2: off2 += size; return off2 - size;
+				case 3: off3 -= size; return off3 + size;
+				case 0: off0 -= size; return off0 + size;
+			}
+		}
+
+		axes.forEach((axis, i) => {
+			if (axis.show && axis._show) {
+				let side = axis.side;
+
+				axis._pos = incrOffset(side, axis._size);
+
+				if (axis.label != null)
+					axis._lpos = incrOffset(side, axis.labelSize);
+			}
+		});
+	}
+
+	const cursor = (self.cursor = assign({}, cursorOpts, {drag: {y: mode == 2}}, opts.cursor));
+
+	{
+		cursor.idxs = activeIdxs;
+
+		cursor._lock = false;
+
+		let points = cursor.points;
+
+		points.show   = fnOrSelf(points.show);
+		points.size   = fnOrSelf(points.size);
+		points.stroke = fnOrSelf(points.stroke);
+		points.width  = fnOrSelf(points.width);
+		points.fill   = fnOrSelf(points.fill);
+	}
+
+	const focus = self.focus = assign({}, opts.focus || {alpha: 0.3}, cursor.focus);
+	const cursorFocus = focus.prox >= 0;
+
+	// series-intersection markers
+	let cursorPts = [null];
+
+	function initCursorPt(s, si) {
+		if (si > 0) {
+			let pt = cursor.points.show(self, si);
+
+			if (pt) {
+				addClass(pt, CURSOR_PT);
+				addClass(pt, s.class);
+				elTrans(pt, -10, -10, plotWidCss, plotHgtCss);
+				over.insertBefore(pt, cursorPts[si]);
+
+				return pt;
+			}
+		}
+	}
+
+	function initSeries(s, i) {
+		if (mode == 1 || i > 0) {
+			let isTime = mode == 1 && scales[s.scale].time;
+
+			let sv = s.value;
+			s.value = isTime ? (isStr(sv) ? timeSeriesVal(_tzDate, timeSeriesStamp(sv, _fmtDate)) : sv || _timeSeriesVal) : sv || numSeriesVal;
+			s.label = s.label || (isTime ? timeSeriesLabel : numSeriesLabel);
+		}
+
+		if (i > 0) {
+			s.width  = s.width == null ? 1 : s.width;
+			s.paths  = s.paths || linearPath || retNull;
+			s.fillTo = fnOrSelf(s.fillTo || seriesFillTo);
+			s.pxAlign = +ifNull(s.pxAlign, pxAlign);
+			s.pxRound = pxRoundGen(s.pxAlign);
+
+			s.stroke = fnOrSelf(s.stroke || null);
+			s.fill   = fnOrSelf(s.fill || null);
+			s._stroke = s._fill = s._paths = s._focus = null;
+
+			let _ptDia = ptDia(s.width, 1);
+			let points = s.points = assign({}, {
+				size: _ptDia,
+				width: max(1, _ptDia * .2),
+				stroke: s.stroke,
+				space: _ptDia * 2,
+				paths: pointsPath,
+				_stroke: null,
+				_fill: null,
+			}, s.points);
+			points.show   = fnOrSelf(points.show);
+			points.filter = fnOrSelf(points.filter);
+			points.fill   = fnOrSelf(points.fill);
+			points.stroke = fnOrSelf(points.stroke);
+			points.paths  = fnOrSelf(points.paths);
+			points.pxAlign = s.pxAlign;
+		}
+
+		if (showLegend) {
+			let rowCells = initLegendRow(s, i);
+			legendRows.splice(i, 0, rowCells[0]);
+			legendCells.splice(i, 0, rowCells[1]);
+			legend.values.push(null);	// NULL_LEGEND_VALS not yet avil here :(
+		}
+
+		if (cursor.show) {
+			activeIdxs.splice(i, 0, null);
+
+			let pt = initCursorPt(s, i);
+			pt && cursorPts.splice(i, 0, pt);
+		}
+	}
+
+	function addSeries(opts, si) {
+		si = si == null ? series.length : si;
+
+		opts = setDefault(opts, si, xSeriesOpts, ySeriesOpts);
+		series.splice(si, 0, opts);
+		initSeries(series[si], si);
+	}
+
+	self.addSeries = addSeries;
+
+	function delSeries(i) {
+		series.splice(i, 1);
+
+		if (showLegend) {
+			legend.values.splice(i, 1);
+
+			legendCells.splice(i, 1);
+			let tr = legendRows.splice(i, 1)[0];
+			offMouse(null, tr.firstChild);
+			tr.remove();
+		}
+
+		if (cursor.show) {
+			activeIdxs.splice(i, 1);
+
+			cursorPts.length > 1 && cursorPts.splice(i, 1)[0].remove();
+		}
+
+		// TODO: de-init no-longer-needed scales?
+	}
+
+	self.delSeries = delSeries;
+
+	const sidesWithAxes = [false, false, false, false];
+
+	function initAxis(axis, i) {
+		axis._show = axis.show;
+
+		if (axis.show) {
+			let isVt = axis.side % 2;
+
+			let sc = scales[axis.scale];
+
+			// this can occur if all series specify non-default scales
+			if (sc == null) {
+				axis.scale = isVt ? series[1].scale : xScaleKey;
+				sc = scales[axis.scale];
+			}
+
+			// also set defaults for incrs & values based on axis distr
+			let isTime = sc.time;
+
+			axis.size   = fnOrSelf(axis.size);
+			axis.space  = fnOrSelf(axis.space);
+			axis.rotate = fnOrSelf(axis.rotate);
+			axis.incrs  = fnOrSelf(axis.incrs  || (          sc.distr == 2 ? wholeIncrs : (isTime ? (ms == 1 ? timeIncrsMs : timeIncrsS) : numIncrs)));
+			axis.splits = fnOrSelf(axis.splits || (isTime && sc.distr == 1 ? _timeAxisSplits : sc.distr == 3 ? logAxisSplits : sc.distr == 4 ? asinhAxisSplits : numAxisSplits));
+
+			axis.stroke       = fnOrSelf(axis.stroke);
+			axis.grid.stroke  = fnOrSelf(axis.grid.stroke);
+			axis.ticks.stroke = fnOrSelf(axis.ticks.stroke);
+
+			let av = axis.values;
+
+			axis.values = (
+				// static array of tick values
+				isArr(av) && !isArr(av[0]) ? fnOrSelf(av) :
+				// temporal
+				isTime ? (
+					// config array of fmtDate string tpls
+					isArr(av) ?
+						timeAxisVals(_tzDate, timeAxisStamps(av, _fmtDate)) :
+					// fmtDate string tpl
+					isStr(av) ?
+						timeAxisVal(_tzDate, av) :
+					av || _timeAxisVals
+				) : av || numAxisVals
+			);
+
+			axis.filter = fnOrSelf(axis.filter || (          sc.distr >= 3 ? logAxisValsFilt : retArg1));
+
+			axis.font      = pxRatioFont(axis.font);
+			axis.labelFont = pxRatioFont(axis.labelFont);
+
+			axis._size   = axis.size(self, null, i, 0);
+
+			axis._space  =
+			axis._rotate =
+			axis._incrs  =
+			axis._found  =	// foundIncrSpace
+			axis._splits =
+			axis._values = null;
+
+			if (axis._size > 0)
+				sidesWithAxes[i] = true;
+
+			axis._el = placeDiv(AXIS, wrap);
+
+			// debug
+		//	axis._el.style.background = "#"  + Math.floor(Math.random()*16777215).toString(16) + '80';
+		}
+	}
+
+	function autoPadSide(self, side, sidesWithAxes, cycleNum) {
+		let [hasTopAxis, hasRgtAxis, hasBtmAxis, hasLftAxis] = sidesWithAxes;
+
+		let ori = side % 2;
+		let size = 0;
+
+		if (ori == 0 && (hasLftAxis || hasRgtAxis))
+			size = (side == 0 && !hasTopAxis || side == 2 && !hasBtmAxis ? round(xAxisOpts.size / 3) : 0);
+		if (ori == 1 && (hasTopAxis || hasBtmAxis))
+			size = (side == 1 && !hasRgtAxis || side == 3 && !hasLftAxis ? round(yAxisOpts.size / 2) : 0);
+
+		return size;
+	}
+
+	const padding = self.padding = (opts.padding || [autoPadSide,autoPadSide,autoPadSide,autoPadSide]).map(p => fnOrSelf(ifNull(p, autoPadSide)));
+	const _padding = self._padding = padding.map((p, i) => p(self, i, sidesWithAxes, 0));
+
+	let dataLen;
+
+	// rendered data window
+	let i0 = null;
+	let i1 = null;
+	const idxs = mode == 1 ? series[0].idxs : null;
+
+	let data0 = null;
+
+	let viaAutoScaleX = false;
+
+	function setData(_data, _resetScales) {
+		if (mode == 2) {
+			dataLen = 0;
+			for (let i = 1; i < series.length; i++)
+				dataLen += data[i][0].length;
+			self.data = data = _data;
+		}
+		else {
+			data = (_data || []).slice();
+			data[0] = data[0] || [];
+
+			self.data = data.slice();
+			data0 = data[0];
+			dataLen = data0.length;
+
+			if (xScaleDistr == 2)
+				data[0] = data0.map((v, i) => i);
+		}
+
+		self._data = data;
+
+		resetYSeries(true);
+
+		fire("setData");
+
+		if (_resetScales !== false) {
+			let xsc = scaleX;
+
+			if (xsc.auto(self, viaAutoScaleX))
+				autoScaleX();
+			else
+				_setScale(xScaleKey, xsc.min, xsc.max);
+
+			shouldSetCursor = cursor.left >= 0;
+			shouldSetLegend = true;
+			commit();
+		}
+	}
+
+	self.setData = setData;
+
+	function autoScaleX() {
+		viaAutoScaleX = true;
+
+		let _min, _max;
+
+		if (mode == 1) {
+			if (dataLen > 0) {
+				i0 = idxs[0] = 0;
+				i1 = idxs[1] = dataLen - 1;
+
+				_min = data[0][i0];
+				_max = data[0][i1];
+
+				if (xScaleDistr == 2) {
+					_min = i0;
+					_max = i1;
+				}
+				else if (dataLen == 1) {
+					if (xScaleDistr == 3)
+						[_min, _max] = rangeLog(_min, _min, scaleX.log, false);
+					else if (xScaleDistr == 4)
+						[_min, _max] = rangeAsinh(_min, _min, scaleX.log, false);
+					else if (scaleX.time)
+						_max = _min + round(86400 / ms);
+					else
+						[_min, _max] = rangeNum(_min, _max, rangePad, true);
+				}
+			}
+			else {
+				i0 = idxs[0] = _min = null;
+				i1 = idxs[1] = _max = null;
+			}
+		}
+
+		_setScale(xScaleKey, _min, _max);
+	}
+
+	let ctxStroke, ctxFill, ctxWidth, ctxDash, ctxJoin, ctxCap, ctxFont, ctxAlign, ctxBaseline;
+	let ctxAlpha;
+
+	function setCtxStyle(stroke = transparent, width, dash = EMPTY_ARR, cap = "butt", fill = transparent, join = "round") {
+		if (stroke != ctxStroke)
+			ctx.strokeStyle = ctxStroke = stroke;
+		if (fill != ctxFill)
+			ctx.fillStyle = ctxFill = fill;
+		if (width != ctxWidth)
+			ctx.lineWidth = ctxWidth = width;
+		if (join != ctxJoin)
+			ctx.lineJoin = ctxJoin = join;
+		if (cap != ctxCap)
+			ctx.lineCap = ctxCap = cap; // (‿|‿)
+		if (dash != ctxDash)
+			ctx.setLineDash(ctxDash = dash);
+	}
+
+	function setFontStyle(font, fill, align, baseline) {
+		if (fill != ctxFill)
+			ctx.fillStyle = ctxFill = fill;
+		if (font != ctxFont)
+			ctx.font = ctxFont = font;
+		if (align != ctxAlign)
+			ctx.textAlign = ctxAlign = align;
+		if (baseline != ctxBaseline)
+			ctx.textBaseline = ctxBaseline = baseline;
+	}
+
+	function accScale(wsc, psc, facet, data) {
+		if (wsc.auto(self, viaAutoScaleX) && (psc == null || psc.min == null)) {
+			let _i0 = ifNull(i0, 0);
+			let _i1 = ifNull(i1, data.length - 1);
+
+			// only run getMinMax() for invalidated series data, else reuse
+			let minMax = facet.min == null ? (wsc.distr == 3 ? getMinMaxLog(data, _i0, _i1) : getMinMax(data, _i0, _i1)) : [facet.min, facet.max];
+
+			// initial min/max
+			wsc.min = min(wsc.min, facet.min = minMax[0]);
+			wsc.max = max(wsc.max, facet.max = minMax[1]);
+		}
+	}
+
+	function setScales() {
+	//	log("setScales()", arguments);
+
+		// wip scales
+		let wipScales = copy(scales, fastIsObj);
+
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+			let psc = pendScales[k];
+
+			if (psc != null && psc.min != null) {
+				assign(wsc, psc);
+
+				// explicitly setting the x-scale invalidates everything (acts as redraw)
+				if (k == xScaleKey)
+					resetYSeries(true);
+			}
+			else if (k != xScaleKey || mode == 2) {
+				if (dataLen == 0 && wsc.from == null) {
+					let minMax = wsc.range(self, null, null, k);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+				else {
+					wsc.min = inf;
+					wsc.max = -inf;
+				}
+			}
+		}
+
+		if (dataLen > 0) {
+			// pre-range y-scales from y series' data values
+			series.forEach((s, i) => {
+				if (mode == 1) {
+					let k = s.scale;
+					let wsc = wipScales[k];
+					let psc = pendScales[k];
+
+					if (i == 0) {
+						let minMax = wsc.range(self, wsc.min, wsc.max, k);
+
+						wsc.min = minMax[0];
+						wsc.max = minMax[1];
+
+						i0 = closestIdx(wsc.min, data[0]);
+						i1 = closestIdx(wsc.max, data[0]);
+
+						// closest indices can be outside of view
+						if (data[0][i0] < wsc.min)
+							i0++;
+						if (data[0][i1] > wsc.max)
+							i1--;
+
+						s.min = data0[i0];
+						s.max = data0[i1];
+					}
+					else if (s.show && s.auto)
+						accScale(wsc, psc, s, data[i]);
+
+					s.idxs[0] = i0;
+					s.idxs[1] = i1;
+				}
+				else {
+					if (i > 0) {
+						if (s.show && s.auto) {
+							// TODO: only handles, assumes and requires facets[0] / 'x' scale, and facets[1] / 'y' scale
+							let [ xFacet, yFacet ] = s.facets;
+							let xScaleKey = xFacet.scale;
+							let yScaleKey = yFacet.scale;
+							let [ xData, yData ] = data[i];
+
+							accScale(wipScales[xScaleKey], pendScales[xScaleKey], xFacet, xData);
+							accScale(wipScales[yScaleKey], pendScales[yScaleKey], yFacet, yData);
+
+							// temp
+							s.min = yFacet.min;
+							s.max = yFacet.max;
+						}
+					}
+				}
+			});
+
+			// range independent scales
+			for (let k in wipScales) {
+				let wsc = wipScales[k];
+				let psc = pendScales[k];
+
+				if (wsc.from == null && (psc == null || psc.min == null)) {
+					let minMax = wsc.range(
+						self,
+						wsc.min ==  inf ? null : wsc.min,
+						wsc.max == -inf ? null : wsc.max,
+						k
+					);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+			}
+		}
+
+		// range dependent scales
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+
+			if (wsc.from != null) {
+				let base = wipScales[wsc.from];
+
+				if (base.min == null)
+					wsc.min = wsc.max = null;
+				else {
+					let minMax = wsc.range(self, base.min, base.max, k);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+			}
+		}
+
+		let changed = {};
+		let anyChanged = false;
+
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+			let sc = scales[k];
+
+			if (sc.min != wsc.min || sc.max != wsc.max) {
+				sc.min = wsc.min;
+				sc.max = wsc.max;
+
+				let distr = sc.distr;
+
+				sc._min = distr == 3 ? log10(sc.min) : distr == 4 ? asinh(sc.min, sc.asinh) : sc.min;
+				sc._max = distr == 3 ? log10(sc.max) : distr == 4 ? asinh(sc.max, sc.asinh) : sc.max;
+
+				changed[k] = anyChanged = true;
+			}
+		}
+
+		if (anyChanged) {
+			// invalidate paths of all series on changed scales
+			series.forEach((s, i) => {
+				if (mode == 2) {
+					if (i > 0 && changed.y)
+						s._paths = null;
+				}
+				else {
+					if (changed[s.scale])
+						s._paths = null;
+				}
+			});
+
+			for (let k in changed) {
+				shouldConvergeSize = true;
+				fire("setScale", k);
+			}
+
+			if (cursor.show)
+				shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+		}
+
+		for (let k in pendScales)
+			pendScales[k] = null;
+	}
+
+	// grabs the nearest indices with y data outside of x-scale limits
+	function getOuterIdxs(ydata) {
+		let _i0 = clamp(i0 - 1, 0, dataLen - 1);
+		let _i1 = clamp(i1 + 1, 0, dataLen - 1);
+
+		while (ydata[_i0] == null && _i0 > 0)
+			_i0--;
+
+		while (ydata[_i1] == null && _i1 < dataLen - 1)
+			_i1++;
+
+		return [_i0, _i1];
+	}
+
+	function drawSeries() {
+		if (dataLen > 0) {
+			series.forEach((s, i) => {
+				if (i > 0 && s.show && s._paths == null) {
+					let _idxs = getOuterIdxs(data[i]);
+					s._paths = s.paths(self, i, _idxs[0], _idxs[1]);
+				}
+			});
+
+			series.forEach((s, i) => {
+				if (i > 0 && s.show) {
+					if (ctxAlpha != s.alpha)
+						ctx.globalAlpha = ctxAlpha = s.alpha;
+
+					{
+						cacheStrokeFill(i, false);
+						s._paths && drawPath(i, false);
+					}
+
+					{
+						cacheStrokeFill(i, true);
+
+						let show = s.points.show(self, i, i0, i1);
+						let idxs = s.points.filter(self, i, show, s._paths ? s._paths.gaps : null);
+
+						if (show || idxs) {
+							s.points._paths = s.points.paths(self, i, i0, i1, idxs);
+							drawPath(i, true);
+						}
+					}
+
+					if (ctxAlpha != 1)
+						ctx.globalAlpha = ctxAlpha = 1;
+
+					fire("drawSeries", i);
+				}
+			});
+		}
+	}
+
+	function cacheStrokeFill(si, _points) {
+		let s = _points ? series[si].points : series[si];
+
+		s._stroke = s.stroke(self, si);
+		s._fill   = s.fill(self, si);
+	}
+
+	function drawPath(si, _points) {
+		let s = _points ? series[si].points : series[si];
+
+		let strokeStyle = s._stroke;
+		let fillStyle   = s._fill;
+
+		let { stroke, fill, clip: gapsClip, flags } = s._paths;
+		let boundsClip = null;
+		let width = roundDec(s.width * pxRatio, 3);
+		let offset = (width % 2) / 2;
+
+		if (_points && fillStyle == null)
+			fillStyle = width > 0 ? "#fff" : strokeStyle;
+
+		let _pxAlign = s.pxAlign == 1;
+
+		_pxAlign && ctx.translate(offset, offset);
+
+		if (!_points) {
+			let lft = plotLft,
+				top = plotTop,
+				wid = plotWid,
+				hgt = plotHgt;
+
+			let halfWid = width * pxRatio / 2;
+
+			if (s.min == 0)
+				hgt += halfWid;
+
+			if (s.max == 0) {
+				top -= halfWid;
+				hgt += halfWid;
+			}
+
+			boundsClip = new Path2D();
+			boundsClip.rect(lft, top, wid, hgt);
+		}
+
+		// the points pathbuilder's gapsClip is its boundsClip, since points dont need gaps clipping, and bounds depend on point size
+		if (_points)
+			strokeFill(strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, gapsClip);
+		else
+			fillStroke(si, strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, boundsClip, gapsClip);
+
+		_pxAlign && ctx.translate(-offset, -offset);
+	}
+
+	function fillStroke(si, strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip) {
+		let didStrokeFill = false;
+
+		// for all bands where this series is the top edge, create upwards clips using the bottom edges
+		// and apply clips + fill with band fill or dfltFill
+		bands.forEach((b, bi) => {
+			// isUpperEdge?
+			if (b.series[0] == si) {
+				let lowerEdge = series[b.series[1]];
+				let lowerData = data[b.series[1]];
+
+				let bandClip = (lowerEdge._paths || EMPTY_OBJ).band;
+				let gapsClip2;
+
+				let _fillStyle = null;
+
+				// hasLowerEdge?
+				if (lowerEdge.show && bandClip && hasData(lowerData, i0, i1)) {
+					_fillStyle = b.fill(self, bi) || fillStyle;
+					gapsClip2 = lowerEdge._paths.clip;
+				}
+				else
+					bandClip = null;
+
+				strokeFill(strokeStyle, lineWidth, lineDash, lineCap, _fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip);
+
+				didStrokeFill = true;
+			}
+		});
+
+		if (!didStrokeFill)
+			strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip);
+	}
+
+	const CLIP_FILL_STROKE = BAND_CLIP_FILL | BAND_CLIP_STROKE;
+
+	function strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip) {
+		setCtxStyle(strokeStyle, lineWidth, lineDash, lineCap, fillStyle);
+
+		if (boundsClip || gapsClip || bandClip) {
+			ctx.save();
+			boundsClip && ctx.clip(boundsClip);
+			gapsClip && ctx.clip(gapsClip);
+		}
+
+		if (bandClip) {
+			if ((flags & CLIP_FILL_STROKE) == CLIP_FILL_STROKE) {
+				ctx.clip(bandClip);
+				gapsClip2 && ctx.clip(gapsClip2);
+				doFill(fillStyle, fillPath);
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+			else if (flags & BAND_CLIP_STROKE) {
+				doFill(fillStyle, fillPath);
+				ctx.clip(bandClip);
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+			else if (flags & BAND_CLIP_FILL) {
+				ctx.save();
+				ctx.clip(bandClip);
+				gapsClip2 && ctx.clip(gapsClip2);
+				doFill(fillStyle, fillPath);
+				ctx.restore();
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+		}
+		else {
+			doFill(fillStyle, fillPath);
+			doStroke(strokeStyle, strokePath, lineWidth);
+		}
+
+		if (boundsClip || gapsClip || bandClip)
+			ctx.restore();
+	}
+
+	function doStroke(strokeStyle, strokePath, lineWidth) {
+		if (lineWidth > 0) {
+			if (strokePath instanceof Map) {
+				strokePath.forEach((strokePath, strokeStyle) => {
+					ctx.strokeStyle = ctxStroke = strokeStyle;
+					ctx.stroke(strokePath);
+				});
+			}
+			else
+				strokePath != null && strokeStyle && ctx.stroke(strokePath);
+		}
+	}
+
+	function doFill(fillStyle, fillPath) {
+		if (fillPath instanceof Map) {
+			fillPath.forEach((fillPath, fillStyle) => {
+				ctx.fillStyle = ctxFill = fillStyle;
+				ctx.fill(fillPath);
+			});
+		}
+		else
+			fillPath != null && fillStyle && ctx.fill(fillPath);
+	}
+
+	function getIncrSpace(axisIdx, min, max, fullDim) {
+		let axis = axes[axisIdx];
+
+		let incrSpace;
+
+		if (fullDim <= 0)
+			incrSpace = [0, 0];
+		else {
+			let minSpace = axis._space = axis.space(self, axisIdx, min, max, fullDim);
+			let incrs    = axis._incrs = axis.incrs(self, axisIdx, min, max, fullDim, minSpace);
+			incrSpace    = findIncr(min, max, incrs, fullDim, minSpace);
+		}
+
+		return (axis._found = incrSpace);
+	}
+
+	function drawOrthoLines(offs, filts, ori, side, pos0, len, width, stroke, dash, cap) {
+		let offset = (width % 2) / 2;
+
+		pxAlign == 1 && ctx.translate(offset, offset);
+
+		setCtxStyle(stroke, width, dash, cap, stroke);
+
+		ctx.beginPath();
+
+		let x0, y0, x1, y1, pos1 = pos0 + (side == 0 || side == 3 ? -len : len);
+
+		if (ori == 0) {
+			y0 = pos0;
+			y1 = pos1;
+		}
+		else {
+			x0 = pos0;
+			x1 = pos1;
+		}
+
+		for (let i = 0; i < offs.length; i++) {
+			if (filts[i] != null) {
+				if (ori == 0)
+					x0 = x1 = offs[i];
+				else
+					y0 = y1 = offs[i];
+
+				ctx.moveTo(x0, y0);
+				ctx.lineTo(x1, y1);
+			}
+		}
+
+		ctx.stroke();
+
+		pxAlign == 1 && ctx.translate(-offset, -offset);
+	}
+
+	function axesCalc(cycleNum) {
+	//	log("axesCalc()", arguments);
+
+		let converged = true;
+
+		axes.forEach((axis, i) => {
+			if (!axis.show)
+				return;
+
+			let scale = scales[axis.scale];
+
+			if (scale.min == null) {
+				if (axis._show) {
+					converged = false;
+					axis._show = false;
+					resetYSeries(false);
+				}
+				return;
+			}
+			else {
+				if (!axis._show) {
+					converged = false;
+					axis._show = true;
+					resetYSeries(false);
+				}
+			}
+
+			let side = axis.side;
+			let ori = side % 2;
+
+			let {min, max} = scale;		// 		// should this toggle them ._show = false
+
+			let [_incr, _space] = getIncrSpace(i, min, max, ori == 0 ? plotWidCss : plotHgtCss);
+
+			if (_space == 0)
+				return;
+
+			// if we're using index positions, force first tick to match passed index
+			let forceMin = scale.distr == 2;
+
+			let _splits = axis._splits = axis.splits(self, i, min, max, _incr, _space, forceMin);
+
+			// tick labels
+			// BOO this assumes a specific data/series
+			let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+			let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+			let values = axis._values = axis.values(self, axis.filter(self, splits, i, _space, incr), i, _space, incr);
+
+			// rotating of labels only supported on bottom x axis
+			axis._rotate = side == 2 ? axis.rotate(self, values, i, _space) : 0;
+
+			let oldSize = axis._size;
+
+			axis._size = ceil(axis.size(self, values, i, cycleNum));
+
+			if (oldSize != null && axis._size != oldSize)			// ready && ?
+				converged = false;
+		});
+
+		return converged;
+	}
+
+	function paddingCalc(cycleNum) {
+		let converged = true;
+
+		padding.forEach((p, i) => {
+			let _p = p(self, i, sidesWithAxes, cycleNum);
+
+			if (_p != _padding[i])
+				converged = false;
+
+			_padding[i] = _p;
+		});
+
+		return converged;
+	}
+
+	function drawAxesGrid() {
+		for (let i = 0; i < axes.length; i++) {
+			let axis = axes[i];
+
+			if (!axis.show || !axis._show)
+				continue;
+
+			let side = axis.side;
+			let ori = side % 2;
+
+			let x, y;
+
+			let fillStyle = axis.stroke(self, i);
+
+			let shiftDir = side == 0 || side == 3 ? -1 : 1;
+
+			// axis label
+			if (axis.label) {
+				let shiftAmt = axis.labelGap * shiftDir;
+				let baseLpos = round((axis._lpos + shiftAmt) * pxRatio);
+
+				setFontStyle(axis.labelFont[0], fillStyle, "center", side == 2 ? TOP : BOTTOM);
+
+				ctx.save();
+
+				if (ori == 1) {
+					x = y = 0;
+
+					ctx.translate(
+						baseLpos,
+						round(plotTop + plotHgt / 2),
+					);
+					ctx.rotate((side == 3 ? -PI : PI) / 2);
+
+				}
+				else {
+					x = round(plotLft + plotWid / 2);
+					y = baseLpos;
+				}
+
+				ctx.fillText(axis.label, x, y);
+
+				ctx.restore();
+			}
+
+			let [_incr, _space] = axis._found;
+
+			if (_space == 0)
+				continue;
+
+			let scale = scales[axis.scale];
+
+			let plotDim = ori == 0 ? plotWid : plotHgt;
+			let plotOff = ori == 0 ? plotLft : plotTop;
+
+			let axisGap = round(axis.gap * pxRatio);
+
+			let _splits = axis._splits;
+
+			// tick labels
+			// BOO this assumes a specific data/series
+			let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+			let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+			let ticks = axis.ticks;
+			let tickSize = ticks.show ? round(ticks.size * pxRatio) : 0;
+
+			// rotating of labels only supported on bottom x axis
+			let angle = axis._rotate * -PI/180;
+
+			let basePos  = pxRound(axis._pos * pxRatio);
+			let shiftAmt = (tickSize + axisGap) * shiftDir;
+			let finalPos = basePos + shiftAmt;
+			    y        = ori == 0 ? finalPos : 0;
+			    x        = ori == 1 ? finalPos : 0;
+
+			let font         = axis.font[0];
+			let textAlign    = axis.align == 1 ? LEFT :
+			                   axis.align == 2 ? RIGHT :
+			                   angle > 0 ? LEFT :
+			                   angle < 0 ? RIGHT :
+			                   ori == 0 ? "center" : side == 3 ? RIGHT : LEFT;
+			let textBaseline = angle ||
+			                   ori == 1 ? "middle" : side == 2 ? TOP   : BOTTOM;
+
+			setFontStyle(font, fillStyle, textAlign, textBaseline);
+
+			let lineHeight = axis.font[1] * lineMult;
+
+			let canOffs = _splits.map(val => pxRound(getPos(val, scale, plotDim, plotOff)));
+
+			let _values = axis._values;
+
+			for (let i = 0; i < _values.length; i++) {
+				let val = _values[i];
+
+				if (val != null) {
+					if (ori == 0)
+						x = canOffs[i];
+					else
+						y = canOffs[i];
+
+					val = "" + val;
+
+					let _parts = val.indexOf("\n") == -1 ? [val] : val.split(/\n/gm);
+
+					for (let j = 0; j < _parts.length; j++) {
+						let text = _parts[j];
+
+						if (angle) {
+							ctx.save();
+							ctx.translate(x, y + j * lineHeight); // can this be replaced with position math?
+							ctx.rotate(angle); // can this be done once?
+							ctx.fillText(text, 0, 0);
+							ctx.restore();
+						}
+						else
+							ctx.fillText(text, x, y + j * lineHeight);
+					}
+				}
+			}
+
+			// ticks
+			if (ticks.show) {
+				drawOrthoLines(
+					canOffs,
+					ticks.filter(self, splits, i, _space, incr),
+					ori,
+					side,
+					basePos,
+					tickSize,
+					roundDec(ticks.width * pxRatio, 3),
+					ticks.stroke(self, i),
+					ticks.dash,
+					ticks.cap,
+				);
+			}
+
+			// grid
+			let grid = axis.grid;
+
+			if (grid.show) {
+				drawOrthoLines(
+					canOffs,
+					grid.filter(self, splits, i, _space, incr),
+					ori,
+					ori == 0 ? 2 : 1,
+					ori == 0 ? plotTop : plotLft,
+					ori == 0 ? plotHgt : plotWid,
+					roundDec(grid.width * pxRatio, 3),
+					grid.stroke(self, i),
+					grid.dash,
+					grid.cap,
+				);
+			}
+		}
+
+		fire("drawAxes");
+	}
+
+	function resetYSeries(minMax) {
+	//	log("resetYSeries()", arguments);
+
+		series.forEach((s, i) => {
+			if (i > 0) {
+				s._paths = null;
+
+				if (minMax) {
+					if (mode == 1) {
+						s.min = null;
+						s.max = null;
+					}
+					else {
+						s.facets.forEach(f => {
+							f.min = null;
+							f.max = null;
+						});
+					}
+				}
+			}
+		});
+	}
+
+	let queuedCommit = false;
+
+	function commit() {
+		if (!queuedCommit) {
+			microTask(_commit);
+			queuedCommit = true;
+		}
+	}
+
+	function _commit() {
+	//	log("_commit()", arguments);
+
+		if (shouldSetScales) {
+			setScales();
+			shouldSetScales = false;
+		}
+
+		if (shouldConvergeSize) {
+			convergeSize();
+			shouldConvergeSize = false;
+		}
+
+		if (shouldSetSize) {
+			setStylePx(under, LEFT,   plotLftCss);
+			setStylePx(under, TOP,    plotTopCss);
+			setStylePx(under, WIDTH,  plotWidCss);
+			setStylePx(under, HEIGHT, plotHgtCss);
+
+			setStylePx(over, LEFT,    plotLftCss);
+			setStylePx(over, TOP,     plotTopCss);
+			setStylePx(over, WIDTH,   plotWidCss);
+			setStylePx(over, HEIGHT,  plotHgtCss);
+
+			setStylePx(wrap, WIDTH,   fullWidCss);
+			setStylePx(wrap, HEIGHT,  fullHgtCss);
+
+			// NOTE: mutating this during print preview in Chrome forces transparent
+			// canvas pixels to white, even when followed up with clearRect() below
+			can.width  = round(fullWidCss * pxRatio);
+			can.height = round(fullHgtCss * pxRatio);
+
+
+			axes.forEach(a => {
+				let { _show, _el, _size, _pos, side } = a;
+
+				if (_show) {
+					let posOffset = (side === 3 || side === 0 ? _size : 0);
+					let isVt = side % 2 == 1;
+
+					setStylePx(_el, isVt ? "left"   : "top",    _pos - posOffset);
+					setStylePx(_el, isVt ? "width"  : "height", _size);
+					setStylePx(_el, isVt ? "top"    : "left",   isVt ? plotTopCss : plotLftCss);
+					setStylePx(_el, isVt ? "height" : "width",  isVt ? plotHgtCss : plotWidCss);
+
+					_el && remClass(_el, OFF);
+				}
+				else
+					_el && addClass(_el, OFF);
+			});
+
+			// invalidate ctx style cache
+			ctxStroke = ctxFill = ctxWidth = ctxJoin = ctxCap = ctxFont = ctxAlign = ctxBaseline = ctxDash = null;
+			ctxAlpha = 1;
+
+			syncRect(false);
+
+			fire("setSize");
+
+			shouldSetSize = false;
+		}
+
+		if (fullWidCss > 0 && fullHgtCss > 0) {
+			ctx.clearRect(0, 0, can.width, can.height);
+			fire("drawClear");
+			drawOrder.forEach(fn => fn());
+			fire("draw");
+		}
+
+	//	if (shouldSetSelect) {
+		// TODO: update .u-select metrics (if visible)
+		//	setStylePx(selectDiv, TOP, select.top = 0);
+		//	setStylePx(selectDiv, LEFT, select.left = 0);
+		//	setStylePx(selectDiv, WIDTH, select.width = 0);
+		//	setStylePx(selectDiv, HEIGHT, select.height = 0);
+		//	shouldSetSelect = false;
+	//	}
+
+		if (cursor.show && shouldSetCursor) {
+			updateCursor(null, true, false);
+			shouldSetCursor = false;
+		}
+
+	//	if (FEAT_LEGEND && legend.show && legend.live && shouldSetLegend) {}
+
+		if (!ready) {
+			ready = true;
+			self.status = 1;
+
+			fire("ready");
+		}
+
+		viaAutoScaleX = false;
+
+		queuedCommit = false;
+	}
+
+	self.redraw = (rebuildPaths, recalcAxes) => {
+		shouldConvergeSize = recalcAxes || false;
+
+		if (rebuildPaths !== false)
+			_setScale(xScaleKey, scaleX.min, scaleX.max);
+		else
+			commit();
+	};
+
+	// redraw() => setScale('x', scales.x.min, scales.x.max);
+
+	// explicit, never re-ranged (is this actually true? for x and y)
+	function setScale(key, opts) {
+		let sc = scales[key];
+
+		if (sc.from == null) {
+			if (dataLen == 0) {
+				let minMax = sc.range(self, opts.min, opts.max, key);
+				opts.min = minMax[0];
+				opts.max = minMax[1];
+			}
+
+			if (opts.min > opts.max) {
+				let _min = opts.min;
+				opts.min = opts.max;
+				opts.max = _min;
+			}
+
+			if (dataLen > 1 && opts.min != null && opts.max != null && opts.max - opts.min < 1e-16)
+				return;
+
+			if (key == xScaleKey) {
+				if (sc.distr == 2 && dataLen > 0) {
+					opts.min = closestIdx(opts.min, data[0]);
+					opts.max = closestIdx(opts.max, data[0]);
+
+					if (opts.min == opts.max)
+						opts.max++;
+				}
+			}
+
+		//	log("setScale()", arguments);
+
+			pendScales[key] = opts;
+
+			shouldSetScales = true;
+			commit();
+		}
+	}
+
+	self.setScale = setScale;
+
+//	INTERACTION
+
+	let xCursor;
+	let yCursor;
+	let vCursor;
+	let hCursor;
+
+	// starting position before cursor.move
+	let rawMouseLeft0;
+	let rawMouseTop0;
+
+	// starting position
+	let mouseLeft0;
+	let mouseTop0;
+
+	// current position before cursor.move
+	let rawMouseLeft1;
+	let rawMouseTop1;
+
+	// current position
+	let mouseLeft1;
+	let mouseTop1;
+
+	let dragging = false;
+
+	const drag = cursor.drag;
+
+	let dragX = drag.x;
+	let dragY = drag.y;
+
+	if (cursor.show) {
+		if (cursor.x)
+			xCursor = placeDiv(CURSOR_X, over);
+		if (cursor.y)
+			yCursor = placeDiv(CURSOR_Y, over);
+
+		if (scaleX.ori == 0) {
+			vCursor = xCursor;
+			hCursor = yCursor;
+		}
+		else {
+			vCursor = yCursor;
+			hCursor = xCursor;
+		}
+
+		mouseLeft1 = cursor.left;
+		mouseTop1 = cursor.top;
+	}
+
+	const select = self.select = assign({
+		show:   true,
+		over:   true,
+		left:   0,
+		width:  0,
+		top:    0,
+		height: 0,
+	}, opts.select);
+
+	const selectDiv = select.show ? placeDiv(SELECT, select.over ? over : under) : null;
+
+	function setSelect(opts, _fire) {
+		if (select.show) {
+			for (let prop in opts)
+				setStylePx(selectDiv, prop, select[prop] = opts[prop]);
+
+			_fire !== false && fire("setSelect");
+		}
+	}
+
+	self.setSelect = setSelect;
+
+	function toggleDOM(i, onOff) {
+		let s = series[i];
+		let label = showLegend ? legendRows[i] : null;
+
+		if (s.show)
+			label && remClass(label, OFF);
+		else {
+			label && addClass(label, OFF);
+			cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+		}
+	}
+
+	function _setScale(key, min, max) {
+		setScale(key, {min, max});
+	}
+
+	function setSeries(i, opts, _fire, _pub) {
+	//	log("setSeries()", arguments);
+
+		let s = series[i];
+
+		if (opts.focus != null)
+			setFocus(i);
+
+		if (opts.show != null) {
+			s.show = opts.show;
+			toggleDOM(i, opts.show);
+
+			_setScale(mode == 2 ? s.facets[1].scale : s.scale, null, null);
+			commit();
+		}
+
+		_fire !== false && fire("setSeries", i, opts);
+
+		_pub && pubSync("setSeries", self, i, opts);
+	}
+
+	self.setSeries = setSeries;
+
+	function setBand(bi, opts) {
+		assign(bands[bi], opts);
+	}
+
+	function addBand(opts, bi) {
+		opts.fill = fnOrSelf(opts.fill || null);
+		bi = bi == null ? bands.length : bi;
+		bands.splice(bi, 0, opts);
+	}
+
+	function delBand(bi) {
+		if (bi == null)
+			bands.length = 0;
+		else
+			bands.splice(bi, 1);
+	}
+
+	self.addBand = addBand;
+	self.setBand = setBand;
+	self.delBand = delBand;
+
+	function setAlpha(i, value) {
+		series[i].alpha = value;
+
+		if (cursor.show && cursorPts[i])
+			cursorPts[i].style.opacity = value;
+
+		if (showLegend && legendRows[i])
+			legendRows[i].style.opacity = value;
+	}
+
+	// y-distance
+	let closestDist;
+	let closestSeries;
+	let focusedSeries;
+	const FOCUS_TRUE  = {focus: true};
+	const FOCUS_FALSE = {focus: false};
+
+	function setFocus(i) {
+		if (i != focusedSeries) {
+		//	log("setFocus()", arguments);
+
+			let allFocused = i == null;
+
+			let _setAlpha = focus.alpha != 1;
+
+			series.forEach((s, i2) => {
+				let isFocused = allFocused || i2 == 0 || i2 == i;
+				s._focus = allFocused ? null : isFocused;
+				_setAlpha && setAlpha(i2, isFocused ? 1 : focus.alpha);
+			});
+
+			focusedSeries = i;
+			_setAlpha && commit();
+		}
+	}
+
+	if (showLegend && cursorFocus) {
+		on(mouseleave, legendEl, e => {
+			if (cursor._lock)
+				return;
+			setSeries(null, FOCUS_FALSE, true, syncOpts.setSeries);
+			updateCursor(null, true, false);
+		});
+	}
+
+	function posToVal(pos, scale, can) {
+		let sc = scales[scale];
+
+		if (can)
+			pos = pos / pxRatio - (sc.ori == 1 ? plotTopCss : plotLftCss);
+
+		let dim = plotWidCss;
+
+		if (sc.ori == 1) {
+			dim = plotHgtCss;
+			pos = dim - pos;
+		}
+
+		if (sc.dir == -1)
+			pos = dim - pos;
+
+		let _min = sc._min,
+			_max = sc._max,
+			pct = pos / dim;
+
+		let sv = _min + (_max - _min) * pct;
+
+		let distr = sc.distr;
+
+		return (
+			distr == 3 ? pow(10, sv) :
+			distr == 4 ? sinh(sv, sc.asinh) :
+			sv
+		);
+	}
+
+	function closestIdxFromXpos(pos, can) {
+		let v = posToVal(pos, xScaleKey, can);
+		return closestIdx(v, data[0], i0, i1);
+	}
+
+	self.valToIdx = val => closestIdx(val, data[0]);
+	self.posToIdx = closestIdxFromXpos;
+	self.posToVal = posToVal;
+	self.valToPos = (val, scale, can) => (
+		scales[scale].ori == 0 ?
+		getHPos(val, scales[scale],
+			can ? plotWid : plotWidCss,
+			can ? plotLft : 0,
+		) :
+		getVPos(val, scales[scale],
+			can ? plotHgt : plotHgtCss,
+			can ? plotTop : 0,
+		)
+	);
+
+	// defers calling expensive functions
+	function batch(fn) {
+		fn(self);
+		commit();
+	}
+
+	self.batch = batch;
+
+	(self.setCursor = (opts, _fire, _pub) => {
+		mouseLeft1 = opts.left;
+		mouseTop1 = opts.top;
+	//	assign(cursor, opts);
+		updateCursor(null, _fire, _pub);
+	});
+
+	function setSelH(off, dim) {
+		setStylePx(selectDiv, LEFT,  select.left = off);
+		setStylePx(selectDiv, WIDTH, select.width = dim);
+	}
+
+	function setSelV(off, dim) {
+		setStylePx(selectDiv, TOP,    select.top = off);
+		setStylePx(selectDiv, HEIGHT, select.height = dim);
+	}
+
+	let setSelX = scaleX.ori == 0 ? setSelH : setSelV;
+	let setSelY = scaleX.ori == 1 ? setSelH : setSelV;
+
+	function syncLegend() {
+		if (showLegend && legend.live) {
+			for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+				if (i == 0 && multiValLegend)
+					continue;
+
+				let vals = legend.values[i];
+
+				let j = 0;
+
+				for (let k in vals)
+					legendCells[i][j++].firstChild.nodeValue = vals[k];
+			}
+		}
+	}
+
+	function setLegend(opts, _fire) {
+		if (opts != null) {
+			let idx = opts.idx;
+
+			legend.idx = idx;
+			series.forEach((s, sidx) => {
+				(sidx > 0 || !multiValLegend) && setLegendValues(sidx, idx);
+			});
+		}
+
+		if (showLegend && legend.live)
+			syncLegend();
+
+		shouldSetLegend = false;
+
+		_fire !== false && fire("setLegend");
+	}
+
+	self.setLegend = setLegend;
+
+	function setLegendValues(sidx, idx) {
+		let val;
+
+		if (idx == null)
+			val = NULL_LEGEND_VALUES;
+		else {
+			let s = series[sidx];
+			let src = sidx == 0 && xScaleDistr == 2 ? data0 : data[sidx];
+			val = multiValLegend ? s.values(self, sidx, idx) : {_: s.value(self, src[idx], sidx, idx)};
+		}
+
+		legend.values[sidx] = val;
+	}
+
+	function updateCursor(src, _fire, _pub) {
+	//	ts == null && log("updateCursor()", arguments);
+
+		rawMouseLeft1 = mouseLeft1;
+		rawMouseTop1 = mouseTop1;
+
+		[mouseLeft1, mouseTop1] = cursor.move(self, mouseLeft1, mouseTop1);
+
+		if (cursor.show) {
+			vCursor && elTrans(vCursor, round(mouseLeft1), 0, plotWidCss, plotHgtCss);
+			hCursor && elTrans(hCursor, 0, round(mouseTop1), plotWidCss, plotHgtCss);
+		}
+
+		let idx;
+
+		// when zooming to an x scale range between datapoints the binary search
+		// for nearest min/max indices results in this condition. cheap hack :D
+		let noDataInRange = i0 > i1; // works for mode 1 only
+
+		closestDist = inf;
+
+		// TODO: extract
+		let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
+		let yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss;
+
+		// if cursor hidden, hide points & clear legend vals
+		if (mouseLeft1 < 0 || dataLen == 0 || noDataInRange) {
+			idx = null;
+
+			for (let i = 0; i < series.length; i++) {
+				if (i > 0) {
+					cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+				}
+			}
+
+			if (cursorFocus)
+				setSeries(null, FOCUS_TRUE, true, src == null && syncOpts.setSeries);
+
+			if (legend.live) {
+				activeIdxs.fill(null);
+				shouldSetLegend = true;
+
+				for (let i = 0; i < series.length; i++)
+					legend.values[i] = NULL_LEGEND_VALUES;
+			}
+		}
+		else {
+		//	let pctY = 1 - (y / rect.height);
+
+			let mouseXPos, valAtPosX, xPos;
+
+			if (mode == 1) {
+				mouseXPos = scaleX.ori == 0 ? mouseLeft1 : mouseTop1;
+				valAtPosX = posToVal(mouseXPos, xScaleKey);
+				idx = closestIdx(valAtPosX, data[0], i0, i1);
+				xPos = incrRoundUp(valToPosX(data[0][idx], scaleX, xDim, 0), 0.5);
+			}
+
+			for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+				let s = series[i];
+
+				let idx1  = activeIdxs[i];
+				let yVal1 = mode == 1 ? data[i][idx1] : data[i][1][idx1];
+
+				let idx2  = cursor.dataIdx(self, i, idx, valAtPosX);
+				let yVal2 = mode == 1 ? data[i][idx2] : data[i][1][idx2];
+
+				shouldSetLegend = shouldSetLegend || yVal2 != yVal1 || idx2 != idx1;
+
+				activeIdxs[i] = idx2;
+
+				let xPos2 = idx2 == idx ? xPos : incrRoundUp(valToPosX(mode == 1 ? data[0][idx2] : data[i][0][idx2], scaleX, xDim, 0), 0.5);
+
+				if (i > 0 && s.show) {
+					let yPos = yVal2 == null ? -10 : incrRoundUp(valToPosY(yVal2, mode == 1 ? scales[s.scale] : scales[s.facets[1].scale], yDim, 0), 0.5);
+
+					if (yPos > 0 && mode == 1) {
+						let dist = abs(yPos - mouseTop1);
+
+						if (dist <= closestDist) {
+							closestDist = dist;
+							closestSeries = i;
+						}
+					}
+
+					let hPos, vPos;
+
+					if (scaleX.ori == 0) {
+						hPos = xPos2;
+						vPos = yPos;
+					}
+					else {
+						hPos = yPos;
+						vPos = xPos2;
+					}
+
+					if (shouldSetLegend && cursorPts.length > 1) {
+						elColor(cursorPts[i], cursor.points.fill(self, i), cursor.points.stroke(self, i));
+
+						let ptWid, ptHgt, ptLft, ptTop,
+							centered = true,
+							getBBox = cursor.points.bbox;
+
+						if (getBBox != null) {
+							centered = false;
+
+							let bbox = getBBox(self, i);
+
+							ptLft = bbox.left;
+							ptTop = bbox.top;
+							ptWid = bbox.width;
+							ptHgt = bbox.height;
+						}
+						else {
+							ptLft = hPos;
+							ptTop = vPos;
+							ptWid = ptHgt = cursor.points.size(self, i);
+						}
+
+						elSize(cursorPts[i], ptWid, ptHgt, centered);
+						elTrans(cursorPts[i], ptLft, ptTop, plotWidCss, plotHgtCss);
+					}
+				}
+
+				if (legend.live) {
+					if (!shouldSetLegend || i == 0 && multiValLegend)
+						continue;
+
+					setLegendValues(i, idx2);
+				}
+			}
+		}
+
+		cursor.idx = idx;
+		cursor.left = mouseLeft1;
+		cursor.top = mouseTop1;
+
+		if (shouldSetLegend) {
+			legend.idx = idx;
+			setLegend();
+		}
+
+		// nit: cursor.drag.setSelect is assumed always true
+		if (select.show && dragging) {
+			if (src != null) {
+				let [xKey, yKey] = syncOpts.scales;
+				let [matchXKeys, matchYKeys] = syncOpts.match;
+				let [xKeySrc, yKeySrc] = src.cursor.sync.scales;
+
+				// match the dragX/dragY implicitness/explicitness of src
+				let sdrag = src.cursor.drag;
+				dragX = sdrag._x;
+				dragY = sdrag._y;
+
+				let { left, top, width, height } = src.select;
+
+				let sori = src.scales[xKey].ori;
+				let sPosToVal = src.posToVal;
+
+				let sOff, sDim, sc, a, b;
+
+				let matchingX = xKey != null && matchXKeys(xKey, xKeySrc);
+				let matchingY = yKey != null && matchYKeys(yKey, yKeySrc);
+
+				if (matchingX) {
+					if (sori == 0) {
+						sOff = left;
+						sDim = width;
+					}
+					else {
+						sOff = top;
+						sDim = height;
+					}
+
+					if (dragX) {
+						sc = scales[xKey];
+
+						a = valToPosX(sPosToVal(sOff, xKeySrc),        sc, xDim, 0);
+						b = valToPosX(sPosToVal(sOff + sDim, xKeySrc), sc, xDim, 0);
+
+						setSelX(min(a,b), abs(b-a));
+					}
+					else
+						setSelX(0, xDim);
+
+					if (!matchingY)
+						setSelY(0, yDim);
+				}
+
+				if (matchingY) {
+					if (sori == 1) {
+						sOff = left;
+						sDim = width;
+					}
+					else {
+						sOff = top;
+						sDim = height;
+					}
+
+					if (dragY) {
+						sc = scales[yKey];
+
+						a = valToPosY(sPosToVal(sOff, yKeySrc),        sc, yDim, 0);
+						b = valToPosY(sPosToVal(sOff + sDim, yKeySrc), sc, yDim, 0);
+
+						setSelY(min(a,b), abs(b-a));
+					}
+					else
+						setSelY(0, yDim);
+
+					if (!matchingX)
+						setSelX(0, xDim);
+				}
+			}
+			else {
+				let rawDX = abs(rawMouseLeft1 - rawMouseLeft0);
+				let rawDY = abs(rawMouseTop1 - rawMouseTop0);
+
+				if (scaleX.ori == 1) {
+					let _rawDX = rawDX;
+					rawDX = rawDY;
+					rawDY = _rawDX;
+				}
+
+				dragX = drag.x && rawDX >= drag.dist;
+				dragY = drag.y && rawDY >= drag.dist;
+
+				let uni = drag.uni;
+
+				if (uni != null) {
+					// only calc drag status if they pass the dist thresh
+					if (dragX && dragY) {
+						dragX = rawDX >= uni;
+						dragY = rawDY >= uni;
+
+						// force unidirectionality when both are under uni limit
+						if (!dragX && !dragY) {
+							if (rawDY > rawDX)
+								dragY = true;
+							else
+								dragX = true;
+						}
+					}
+				}
+				else if (drag.x && drag.y && (dragX || dragY))
+					// if omni with no uni then both dragX / dragY should be true if either is true
+					dragX = dragY = true;
+
+				let p0, p1;
+
+				if (dragX) {
+					if (scaleX.ori == 0) {
+						p0 = mouseLeft0;
+						p1 = mouseLeft1;
+					}
+					else {
+						p0 = mouseTop0;
+						p1 = mouseTop1;
+					}
+
+					setSelX(min(p0, p1), abs(p1 - p0));
+
+					if (!dragY)
+						setSelY(0, yDim);
+				}
+
+				if (dragY) {
+					if (scaleX.ori == 1) {
+						p0 = mouseLeft0;
+						p1 = mouseLeft1;
+					}
+					else {
+						p0 = mouseTop0;
+						p1 = mouseTop1;
+					}
+
+					setSelY(min(p0, p1), abs(p1 - p0));
+
+					if (!dragX)
+						setSelX(0, xDim);
+				}
+
+				// the drag didn't pass the dist requirement
+				if (!dragX && !dragY) {
+					setSelX(0, 0);
+					setSelY(0, 0);
+				}
+			}
+		}
+
+		drag._x = dragX;
+		drag._y = dragY;
+
+		if (src == null) {
+			if (_pub) {
+				if (syncKey != null) {
+					let [xSyncKey, ySyncKey] = syncOpts.scales;
+
+					syncOpts.values[0] = xSyncKey != null ? posToVal(scaleX.ori == 0 ? mouseLeft1 : mouseTop1, xSyncKey) : null;
+					syncOpts.values[1] = ySyncKey != null ? posToVal(scaleX.ori == 1 ? mouseLeft1 : mouseTop1, ySyncKey) : null;
+				}
+
+				pubSync(mousemove, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, idx);
+			}
+
+			if (cursorFocus) {
+				let shouldPub = _pub && syncOpts.setSeries;
+				let p = focus.prox;
+
+				if (focusedSeries == null) {
+					if (closestDist <= p)
+						setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+				}
+				else {
+					if (closestDist > p)
+						setSeries(null, FOCUS_TRUE, true, shouldPub);
+					else if (closestSeries != focusedSeries)
+						setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+				}
+			}
+		}
+
+		ready && _fire !== false && fire("setCursor");
+	}
+
+	let rect = null;
+
+	function syncRect(defer) {
+		if (defer === true)
+			rect = null;
+		else {
+			rect = over.getBoundingClientRect();
+			fire("syncRect", rect);
+		}
+	}
+
+	function mouseMove(e, src, _l, _t, _w, _h, _i) {
+		if (cursor._lock)
+			return;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, false, e != null);
+
+		if (e != null)
+			updateCursor(null, true, true);
+		else
+			updateCursor(src, true, false);
+	}
+
+	function cacheMouse(e, src, _l, _t, _w, _h, _i, initial, snap) {
+		if (rect == null)
+			syncRect(false);
+
+		if (e != null) {
+			_l = e.clientX - rect.left;
+			_t = e.clientY - rect.top;
+		}
+		else {
+			if (_l < 0 || _t < 0) {
+				mouseLeft1 = -10;
+				mouseTop1 = -10;
+				return;
+			}
+
+			let [xKey, yKey] = syncOpts.scales;
+
+			let syncOptsSrc = src.cursor.sync;
+			let [xValSrc, yValSrc] = syncOptsSrc.values;
+			let [xKeySrc, yKeySrc] = syncOptsSrc.scales;
+			let [matchXKeys, matchYKeys] = syncOpts.match;
+
+			let rotSrc = src.scales[xKeySrc].ori == 1;
+
+			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss,
+				yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss,
+				_xDim = rotSrc ? _h : _w,
+				_yDim = rotSrc ? _w : _h,
+				_xPos = rotSrc ? _t : _l,
+				_yPos = rotSrc ? _l : _t;
+
+			if (xKeySrc != null)
+				_l = matchXKeys(xKey, xKeySrc) ? getPos(xValSrc, scales[xKey], xDim, 0) : -10;
+			else
+				_l = xDim * (_xPos/_xDim);
+
+			if (yKeySrc != null)
+				_t = matchYKeys(yKey, yKeySrc) ? getPos(yValSrc, scales[yKey], yDim, 0) : -10;
+			else
+				_t = yDim * (_yPos/_yDim);
+
+			if (scaleX.ori == 1) {
+				let __l = _l;
+				_l = _t;
+				_t = __l;
+			}
+		}
+
+		if (snap) {
+			if (_l <= 1 || _l >= plotWidCss - 1)
+				_l = incrRound(_l, plotWidCss);
+
+			if (_t <= 1 || _t >= plotHgtCss - 1)
+				_t = incrRound(_t, plotHgtCss);
+		}
+
+		if (initial) {
+			rawMouseLeft0 = _l;
+			rawMouseTop0 = _t;
+
+			[mouseLeft0, mouseTop0] = cursor.move(self, _l, _t);
+		}
+		else {
+			mouseLeft1 = _l;
+			mouseTop1 = _t;
+		}
+	}
+
+	function hideSelect() {
+		setSelect({
+			width: 0,
+			height: 0,
+		}, false);
+	}
+
+	function mouseDown(e, src, _l, _t, _w, _h, _i) {
+		dragging = true;
+		dragX = dragY = drag._x = drag._y = false;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, true, false);
+
+		if (e != null) {
+			onMouse(mouseup, doc, mouseUp);
+			pubSync(mousedown, self, mouseLeft0, mouseTop0, plotWidCss, plotHgtCss, null);
+		}
+	}
+
+	function mouseUp(e, src, _l, _t, _w, _h, _i) {
+		dragging = drag._x = drag._y = false;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, false, true);
+
+		let { left, top, width, height } = select;
+
+		let hasSelect = width > 0 || height > 0;
+
+		hasSelect && setSelect(select);
+
+		if (drag.setScale && hasSelect) {
+		//	if (syncKey != null) {
+		//		dragX = drag.x;
+		//		dragY = drag.y;
+		//	}
+
+			let xOff = left,
+				xDim = width,
+				yOff = top,
+				yDim = height;
+
+			if (scaleX.ori == 1) {
+				xOff = top,
+				xDim = height,
+				yOff = left,
+				yDim = width;
+			}
+
+			if (dragX) {
+				_setScale(xScaleKey,
+					posToVal(xOff, xScaleKey),
+					posToVal(xOff + xDim, xScaleKey)
+				);
+			}
+
+			if (dragY) {
+				for (let k in scales) {
+					let sc = scales[k];
+
+					if (k != xScaleKey && sc.from == null && sc.min != inf) {
+						_setScale(k,
+							posToVal(yOff + yDim, k),
+							posToVal(yOff, k)
+						);
+					}
+				}
+			}
+
+			hideSelect();
+		}
+		else if (cursor.lock) {
+			cursor._lock = !cursor._lock;
+
+			if (!cursor._lock)
+				updateCursor(null, true, false);
+		}
+
+		if (e != null) {
+			offMouse(mouseup, doc);
+			pubSync(mouseup, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+		}
+	}
+
+	function mouseLeave(e, src, _l, _t, _w, _h, _i) {
+		if (!cursor._lock) {
+			let _dragging = dragging;
+
+			if (dragging) {
+				// handle case when mousemove aren't fired all the way to edges by browser
+				let snapH = true;
+				let snapV = true;
+				let snapProx = 10;
+
+				let dragH, dragV;
+
+				if (scaleX.ori == 0) {
+					dragH = dragX;
+					dragV = dragY;
+				}
+				else {
+					dragH = dragY;
+					dragV = dragX;
+				}
+
+				if (dragH && dragV) {
+					// maybe omni corner snap
+					snapH = mouseLeft1 <= snapProx || mouseLeft1 >= plotWidCss - snapProx;
+					snapV = mouseTop1  <= snapProx || mouseTop1  >= plotHgtCss - snapProx;
+				}
+
+				if (dragH && snapH)
+					mouseLeft1 = mouseLeft1 < mouseLeft0 ? 0 : plotWidCss;
+
+				if (dragV && snapV)
+					mouseTop1 = mouseTop1 < mouseTop0 ? 0 : plotHgtCss;
+
+				updateCursor(null, true, true);
+
+				dragging = false;
+			}
+
+			mouseLeft1 = -10;
+			mouseTop1 = -10;
+
+			// passing a non-null timestamp to force sync/mousemove event
+			updateCursor(null, true, true);
+
+			if (_dragging)
+				dragging = _dragging;
+		}
+	}
+
+	function dblClick(e, src, _l, _t, _w, _h, _i) {
+		autoScaleX();
+
+		hideSelect();
+
+		if (e != null)
+			pubSync(dblclick, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+	}
+
+	function syncPxRatio() {
+		axes.forEach(syncFontSize);
+		_setSize(self.width, self.height, true);
+	}
+
+	on(dppxchange, win, syncPxRatio);
+
+	// internal pub/sub
+	const events = {};
+
+	events.mousedown = mouseDown;
+	events.mousemove = mouseMove;
+	events.mouseup = mouseUp;
+	events.dblclick = dblClick;
+	events["setSeries"] = (e, src, idx, opts) => {
+		setSeries(idx, opts, true, false);
+	};
+
+	if (cursor.show) {
+		onMouse(mousedown,  over, mouseDown);
+		onMouse(mousemove,  over, mouseMove);
+		onMouse(mouseenter, over, syncRect);
+		onMouse(mouseleave, over, mouseLeave);
+
+		onMouse(dblclick, over, dblClick);
+
+		cursorPlots.add(self);
+
+		self.syncRect = syncRect;
+	}
+
+	// external on/off
+	const hooks = self.hooks = opts.hooks || {};
+
+	function fire(evName, a1, a2) {
+		if (evName in hooks) {
+			hooks[evName].forEach(fn => {
+				fn.call(null, self, a1, a2);
+			});
+		}
+	}
+
+	(opts.plugins || []).forEach(p => {
+		for (let evName in p.hooks)
+			hooks[evName] = (hooks[evName] || []).concat(p.hooks[evName]);
+	});
+
+	const syncOpts = assign({
+		key: null,
+		setSeries: false,
+		filters: {
+			pub: retTrue,
+			sub: retTrue,
+		},
+		scales: [xScaleKey, series[1] ? series[1].scale : null],
+		match: [retEq, retEq],
+		values: [null, null],
+	}, cursor.sync);
+
+	(cursor.sync = syncOpts);
+
+	const syncKey = syncOpts.key;
+
+	const sync = _sync(syncKey);
+
+	function pubSync(type, src, x, y, w, h, i) {
+		if (syncOpts.filters.pub(type, src, x, y, w, h, i))
+			sync.pub(type, src, x, y, w, h, i);
+	}
+
+	sync.sub(self);
+
+	function pub(type, src, x, y, w, h, i) {
+		if (syncOpts.filters.sub(type, src, x, y, w, h, i))
+			events[type](null, src, x, y, w, h, i);
+	}
+
+	(self.pub = pub);
+
+	function destroy() {
+		sync.unsub(self);
+		cursorPlots.delete(self);
+		mouseListeners.clear();
+		off(dppxchange, win, syncPxRatio);
+		root.remove();
+		fire("destroy");
+	}
+
+	self.destroy = destroy;
+
+	function _init() {
+		fire("init", opts, data);
+
+		setData(data || opts.data, false);
+
+		if (pendScales[xScaleKey])
+			setScale(xScaleKey, pendScales[xScaleKey]);
+		else
+			autoScaleX();
+
+		_setSize(opts.width, opts.height);
+
+		updateCursor(null, true, false);
+
+		setSelect(select, false);
+	}
+
+	series.forEach(initSeries);
+
+	axes.forEach(initAxis);
+
+	if (then) {
+		if (then instanceof HTMLElement) {
+			then.appendChild(root);
+			_init();
+		}
+		else
+			then(self, _init);
+	}
+	else
+		_init();
+
+	return self;
+}
+
+uPlot.assign = assign;
+uPlot.fmtNum = fmtNum;
+uPlot.rangeNum = rangeNum;
+uPlot.rangeLog = rangeLog;
+uPlot.rangeAsinh = rangeAsinh;
+uPlot.orient   = orient;
+
+{
+	uPlot.join = join;
+}
+
+{
+	uPlot.fmtDate = fmtDate;
+	uPlot.tzDate  = tzDate;
+}
+
+{
+	uPlot.sync = _sync;
+}
+
+{
+	uPlot.addGap = addGap;
+	uPlot.clipGaps = clipGaps;
+
+	let paths = uPlot.paths = {
+		points,
+	};
+
+	(paths.linear  = linear);
+	(paths.stepped = stepped);
+	(paths.bars    = bars);
+	(paths.spline  = monotoneCubic);
+}
+
+module.exports = uPlot;
diff --git a/src/main/resources/static/plugins/uplot/uPlot.esm.js b/src/main/resources/static/plugins/uplot/uPlot.esm.js
new file mode 100644
index 0000000..f7c486d
--- /dev/null
+++ b/src/main/resources/static/plugins/uplot/uPlot.esm.js
@@ -0,0 +1,5210 @@
+/**
+* Copyright (c) 2021, Leon Sorokin
+* All rights reserved. (MIT Licensed)
+*
+* uPlot.js (μPlot)
+* A small, fast chart for time series, lines, areas, ohlc & bars
+* https://github.com/leeoniya/uPlot (v1.6.18)
+*/
+
+const FEAT_TIME          = true;
+
+// binary search for index of closest value
+function closestIdx(num, arr, lo, hi) {
+	let mid;
+	lo = lo || 0;
+	hi = hi || arr.length - 1;
+	let bitwise = hi <= 2147483647;
+
+	while (hi - lo > 1) {
+		mid = bitwise ? (lo + hi) >> 1 : floor((lo + hi) / 2);
+
+		if (arr[mid] < num)
+			lo = mid;
+		else
+			hi = mid;
+	}
+
+	if (num - arr[lo] <= arr[hi] - num)
+		return lo;
+
+	return hi;
+}
+
+function nonNullIdx(data, _i0, _i1, dir) {
+	for (let i = dir == 1 ? _i0 : _i1; i >= _i0 && i <= _i1; i += dir) {
+		if (data[i] != null)
+			return i;
+	}
+
+	return -1;
+}
+
+function getMinMax(data, _i0, _i1, sorted) {
+//	console.log("getMinMax()");
+
+	let _min = inf;
+	let _max = -inf;
+
+	if (sorted == 1) {
+		_min = data[_i0];
+		_max = data[_i1];
+	}
+	else if (sorted == -1) {
+		_min = data[_i1];
+		_max = data[_i0];
+	}
+	else {
+		for (let i = _i0; i <= _i1; i++) {
+			if (data[i] != null) {
+				_min = min(_min, data[i]);
+				_max = max(_max, data[i]);
+			}
+		}
+	}
+
+	return [_min, _max];
+}
+
+function getMinMaxLog(data, _i0, _i1) {
+//	console.log("getMinMax()");
+
+	let _min = inf;
+	let _max = -inf;
+
+	for (let i = _i0; i <= _i1; i++) {
+		if (data[i] > 0) {
+			_min = min(_min, data[i]);
+			_max = max(_max, data[i]);
+		}
+	}
+
+	return [
+		_min ==  inf ?  1 : _min,
+		_max == -inf ? 10 : _max,
+	];
+}
+
+const _fixedTuple = [0, 0];
+
+function fixIncr(minIncr, maxIncr, minExp, maxExp) {
+	_fixedTuple[0] = minExp < 0 ? roundDec(minIncr, -minExp) : minIncr;
+	_fixedTuple[1] = maxExp < 0 ? roundDec(maxIncr, -maxExp) : maxIncr;
+	return _fixedTuple;
+}
+
+function rangeLog(min, max, base, fullMags) {
+	let minSign = sign(min);
+
+	let logFn = base == 10 ? log10 : log2;
+
+	if (min == max) {
+		if (minSign == -1) {
+			min *= base;
+			max /= base;
+		}
+		else {
+			min /= base;
+			max *= base;
+		}
+	}
+
+	let minExp, maxExp, minMaxIncrs;
+
+	if (fullMags) {
+		minExp = floor(logFn(min));
+		maxExp =  ceil(logFn(max));
+
+		minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+		min = minMaxIncrs[0];
+		max = minMaxIncrs[1];
+	}
+	else {
+		minExp = floor(logFn(abs(min)));
+		maxExp = floor(logFn(abs(max)));
+
+		minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+		min = incrRoundDn(min, minMaxIncrs[0]);
+		max = incrRoundUp(max, minMaxIncrs[1]);
+	}
+
+	return [min, max];
+}
+
+function rangeAsinh(min, max, base, fullMags) {
+	let minMax = rangeLog(min, max, base, fullMags);
+
+	if (min == 0)
+		minMax[0] = 0;
+
+	if (max == 0)
+		minMax[1] = 0;
+
+	return minMax;
+}
+
+const rangePad = 0.1;
+
+const autoRangePart = {
+	mode: 3,
+	pad: rangePad,
+};
+
+const _eqRangePart = {
+	pad:  0,
+	soft: null,
+	mode: 0,
+};
+
+const _eqRange = {
+	min: _eqRangePart,
+	max: _eqRangePart,
+};
+
+// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+function rangeNum(_min, _max, mult, extra) {
+	if (isObj(mult))
+		return _rangeNum(_min, _max, mult);
+
+	_eqRangePart.pad  = mult;
+	_eqRangePart.soft = extra ? 0 : null;
+	_eqRangePart.mode = extra ? 3 : 0;
+
+	return _rangeNum(_min, _max, _eqRange);
+}
+
+// nullish coalesce
+function ifNull(lh, rh) {
+	return lh == null ? rh : lh;
+}
+
+// checks if given index range in an array contains a non-null value
+// aka a range-bounded Array.some()
+function hasData(data, idx0, idx1) {
+	idx0 = ifNull(idx0, 0);
+	idx1 = ifNull(idx1, data.length - 1);
+
+	while (idx0 <= idx1) {
+		if (data[idx0] != null)
+			return true;
+		idx0++;
+	}
+
+	return false;
+}
+
+function _rangeNum(_min, _max, cfg) {
+	let cmin = cfg.min;
+	let cmax = cfg.max;
+
+	let padMin = ifNull(cmin.pad, 0);
+	let padMax = ifNull(cmax.pad, 0);
+
+	let hardMin = ifNull(cmin.hard, -inf);
+	let hardMax = ifNull(cmax.hard,  inf);
+
+	let softMin = ifNull(cmin.soft,  inf);
+	let softMax = ifNull(cmax.soft, -inf);
+
+	let softMinMode = ifNull(cmin.mode, 0);
+	let softMaxMode = ifNull(cmax.mode, 0);
+
+	let delta        = _max - _min;
+
+	// this handles situations like 89.7, 89.69999999999999
+	// by assuming 0.001x deltas are precision errors
+//	if (delta > 0 && delta < abs(_max) / 1e3)
+//		delta = 0;
+
+	// treat data as flat if delta is less than 1 billionth
+	if (delta < 1e-9) {
+		delta = 0;
+
+		// if soft mode is 2 and all vals are flat at 0, avoid the 0.1 * 1e3 fallback
+		// this prevents 0,0,0 from ranging to -100,100 when softMin/softMax are -1,1
+		if (_min == 0 || _max == 0) {
+			delta = 1e-9;
+
+			if (softMinMode == 2 && softMin != inf)
+				padMin = 0;
+
+			if (softMaxMode == 2 && softMax != -inf)
+				padMax = 0;
+		}
+	}
+
+	let nonZeroDelta = delta || abs(_max) || 1e3;
+	let mag          = log10(nonZeroDelta);
+	let base         = pow(10, floor(mag));
+
+	let _padMin  = nonZeroDelta * (delta == 0 ? (_min == 0 ? .1 : 1) : padMin);
+	let _newMin  = roundDec(incrRoundDn(_min - _padMin, base/10), 9);
+	let _softMin = _min >= softMin && (softMinMode == 1 || softMinMode == 3 && _newMin <= softMin || softMinMode == 2 && _newMin >= softMin) ? softMin : inf;
+	let minLim   = max(hardMin, _newMin < _softMin && _min >= _softMin ? _softMin : min(_softMin, _newMin));
+
+	let _padMax  = nonZeroDelta * (delta == 0 ? (_max == 0 ? .1 : 1) : padMax);
+	let _newMax  = roundDec(incrRoundUp(_max + _padMax, base/10), 9);
+	let _softMax = _max <= softMax && (softMaxMode == 1 || softMaxMode == 3 && _newMax >= softMax || softMaxMode == 2 && _newMax <= softMax) ? softMax : -inf;
+	let maxLim   = min(hardMax, _newMax > _softMax && _max <= _softMax ? _softMax : max(_softMax, _newMax));
+
+	if (minLim == maxLim && minLim == 0)
+		maxLim = 100;
+
+	return [minLim, maxLim];
+}
+
+// alternative: https://stackoverflow.com/a/2254896
+const fmtNum = new Intl.NumberFormat(navigator.language).format;
+
+const M = Math;
+
+const PI = M.PI;
+const abs = M.abs;
+const floor = M.floor;
+const round = M.round;
+const ceil = M.ceil;
+const min = M.min;
+const max = M.max;
+const pow = M.pow;
+const sign = M.sign;
+const log10 = M.log10;
+const log2 = M.log2;
+// TODO: seems like this needs to match asinh impl if the passed v is tweaked?
+const sinh =  (v, linthresh = 1) => M.sinh(v) * linthresh;
+const asinh = (v, linthresh = 1) => M.asinh(v / linthresh);
+
+const inf = Infinity;
+
+function numIntDigits(x) {
+	return (log10((x ^ (x >> 31)) - (x >> 31)) | 0) + 1;
+}
+
+function incrRound(num, incr) {
+	return round(num/incr)*incr;
+}
+
+function clamp(num, _min, _max) {
+	return min(max(num, _min), _max);
+}
+
+function fnOrSelf(v) {
+	return typeof v == "function" ? v : () => v;
+}
+
+const retArg0 = _0 => _0;
+
+const retArg1 = (_0, _1) => _1;
+
+const retNull = _ => null;
+
+const retTrue = _ => true;
+
+const retEq = (a, b) => a == b;
+
+function incrRoundUp(num, incr) {
+	return ceil(num/incr)*incr;
+}
+
+function incrRoundDn(num, incr) {
+	return floor(num/incr)*incr;
+}
+
+function roundDec(val, dec) {
+	return round(val * (dec = 10**dec)) / dec;
+}
+
+const fixedDec = new Map();
+
+function guessDec(num) {
+	return ((""+num).split(".")[1] || "").length;
+}
+
+function genIncrs(base, minExp, maxExp, mults) {
+	let incrs = [];
+
+	let multDec = mults.map(guessDec);
+
+	for (let exp = minExp; exp < maxExp; exp++) {
+		let expa = abs(exp);
+		let mag = roundDec(pow(base, exp), expa);
+
+		for (let i = 0; i < mults.length; i++) {
+			let _incr = mults[i] * mag;
+			let dec = (_incr >= 0 && exp >= 0 ? 0 : expa) + (exp >= multDec[i] ? 0 : multDec[i]);
+			let incr = roundDec(_incr, dec);
+			incrs.push(incr);
+			fixedDec.set(incr, dec);
+		}
+	}
+
+	return incrs;
+}
+
+//export const assign = Object.assign;
+
+const EMPTY_OBJ = {};
+const EMPTY_ARR = [];
+
+const nullNullTuple = [null, null];
+
+const isArr = Array.isArray;
+
+function isStr(v) {
+	return typeof v == 'string';
+}
+
+function isObj(v) {
+	let is = false;
+
+	if (v != null) {
+		let c = v.constructor;
+		is = c == null || c == Object;
+	}
+
+	return is;
+}
+
+function fastIsObj(v) {
+	return v != null && typeof v == 'object';
+}
+
+function copy(o, _isObj = isObj) {
+	let out;
+
+	if (isArr(o)) {
+		let val = o.find(v => v != null);
+
+		if (isArr(val) || _isObj(val)) {
+			out = Array(o.length);
+			for (let i = 0; i < o.length; i++)
+			  out[i] = copy(o[i], _isObj);
+		}
+		else
+			out = o.slice();
+	}
+	else if (_isObj(o)) {
+		out = {};
+		for (let k in o)
+			out[k] = copy(o[k], _isObj);
+	}
+	else
+		out = o;
+
+	return out;
+}
+
+function assign(targ) {
+	let args = arguments;
+
+	for (let i = 1; i < args.length; i++) {
+		let src = args[i];
+
+		for (let key in src) {
+			if (isObj(targ[key]))
+				assign(targ[key], copy(src[key]));
+			else
+				targ[key] = copy(src[key]);
+		}
+	}
+
+	return targ;
+}
+
+// nullModes
+const NULL_REMOVE = 0;  // nulls are converted to undefined (e.g. for spanGaps: true)
+const NULL_RETAIN = 1;  // nulls are retained, with alignment artifacts set to undefined (default)
+const NULL_EXPAND = 2;  // nulls are expanded to include any adjacent alignment artifacts
+
+// sets undefined values to nulls when adjacent to existing nulls (minesweeper)
+function nullExpand(yVals, nullIdxs, alignedLen) {
+	for (let i = 0, xi, lastNullIdx = -1; i < nullIdxs.length; i++) {
+		let nullIdx = nullIdxs[i];
+
+		if (nullIdx > lastNullIdx) {
+			xi = nullIdx - 1;
+			while (xi >= 0 && yVals[xi] == null)
+				yVals[xi--] = null;
+
+			xi = nullIdx + 1;
+			while (xi < alignedLen && yVals[xi] == null)
+				yVals[lastNullIdx = xi++] = null;
+		}
+	}
+}
+
+// nullModes is a tables-matched array indicating how to treat nulls in each series
+// output is sorted ASC on the joined field (table[0]) and duplicate join values are collapsed
+function join(tables, nullModes) {
+	let xVals = new Set();
+
+	for (let ti = 0; ti < tables.length; ti++) {
+		let t = tables[ti];
+		let xs = t[0];
+		let len = xs.length;
+
+		for (let i = 0; i < len; i++)
+			xVals.add(xs[i]);
+	}
+
+	let data = [Array.from(xVals).sort((a, b) => a - b)];
+
+	let alignedLen = data[0].length;
+
+	let xIdxs = new Map();
+
+	for (let i = 0; i < alignedLen; i++)
+		xIdxs.set(data[0][i], i);
+
+	for (let ti = 0; ti < tables.length; ti++) {
+		let t = tables[ti];
+		let xs = t[0];
+
+		for (let si = 1; si < t.length; si++) {
+			let ys = t[si];
+
+			let yVals = Array(alignedLen).fill(undefined);
+
+			let nullMode = nullModes ? nullModes[ti][si] : NULL_RETAIN;
+
+			let nullIdxs = [];
+
+			for (let i = 0; i < ys.length; i++) {
+				let yVal = ys[i];
+				let alignedIdx = xIdxs.get(xs[i]);
+
+				if (yVal === null) {
+					if (nullMode != NULL_REMOVE) {
+						yVals[alignedIdx] = yVal;
+
+						if (nullMode == NULL_EXPAND)
+							nullIdxs.push(alignedIdx);
+					}
+				}
+				else
+					yVals[alignedIdx] = yVal;
+			}
+
+			nullExpand(yVals, nullIdxs, alignedLen);
+
+			data.push(yVals);
+		}
+	}
+
+	return data;
+}
+
+const microTask = typeof queueMicrotask == "undefined" ? fn => Promise.resolve().then(fn) : queueMicrotask;
+
+const WIDTH       = "width";
+const HEIGHT      = "height";
+const TOP         = "top";
+const BOTTOM      = "bottom";
+const LEFT        = "left";
+const RIGHT       = "right";
+const hexBlack    = "#000";
+const transparent = hexBlack + "0";
+
+const mousemove   = "mousemove";
+const mousedown   = "mousedown";
+const mouseup     = "mouseup";
+const mouseenter  = "mouseenter";
+const mouseleave  = "mouseleave";
+const dblclick    = "dblclick";
+const resize      = "resize";
+const scroll      = "scroll";
+
+const change      = "change";
+const dppxchange  = "dppxchange";
+
+const pre = "u-";
+
+const UPLOT          =       "uplot";
+const ORI_HZ         = pre + "hz";
+const ORI_VT         = pre + "vt";
+const TITLE          = pre + "title";
+const WRAP           = pre + "wrap";
+const UNDER          = pre + "under";
+const OVER           = pre + "over";
+const AXIS           = pre + "axis";
+const OFF            = pre + "off";
+const SELECT         = pre + "select";
+const CURSOR_X       = pre + "cursor-x";
+const CURSOR_Y       = pre + "cursor-y";
+const CURSOR_PT      = pre + "cursor-pt";
+const LEGEND         = pre + "legend";
+const LEGEND_LIVE    = pre + "live";
+const LEGEND_INLINE  = pre + "inline";
+const LEGEND_THEAD   = pre + "thead";
+const LEGEND_SERIES  = pre + "series";
+const LEGEND_MARKER  = pre + "marker";
+const LEGEND_LABEL   = pre + "label";
+const LEGEND_VALUE   = pre + "value";
+
+const doc = document;
+const win = window;
+let pxRatio;
+
+let query;
+
+function setPxRatio() {
+	let _pxRatio = devicePixelRatio;
+
+	// during print preview, Chrome fires off these dppx queries even without changes
+	if (pxRatio != _pxRatio) {
+		pxRatio = _pxRatio;
+
+		query && off(change, query, setPxRatio);
+		query = matchMedia(`(min-resolution: ${pxRatio - 0.001}dppx) and (max-resolution: ${pxRatio + 0.001}dppx)`);
+		on(change, query, setPxRatio);
+
+		win.dispatchEvent(new CustomEvent(dppxchange));
+	}
+}
+
+function addClass(el, c) {
+	if (c != null) {
+		let cl = el.classList;
+		!cl.contains(c) && cl.add(c);
+	}
+}
+
+function remClass(el, c) {
+	let cl = el.classList;
+	cl.contains(c) && cl.remove(c);
+}
+
+function setStylePx(el, name, value) {
+	el.style[name] = value + "px";
+}
+
+function placeTag(tag, cls, targ, refEl) {
+	let el = doc.createElement(tag);
+
+	if (cls != null)
+		addClass(el, cls);
+
+	if (targ != null)
+		targ.insertBefore(el, refEl);
+
+	return el;
+}
+
+function placeDiv(cls, targ) {
+	return placeTag("div", cls, targ);
+}
+
+const xformCache = new WeakMap();
+
+function elTrans(el, xPos, yPos, xMax, yMax) {
+	let xform = "translate(" + xPos + "px," + yPos + "px)";
+	let xformOld = xformCache.get(el);
+
+	if (xform != xformOld) {
+		el.style.transform = xform;
+		xformCache.set(el, xform);
+
+		if (xPos < 0 || yPos < 0 || xPos > xMax || yPos > yMax)
+			addClass(el, OFF);
+		else
+			remClass(el, OFF);
+	}
+}
+
+const colorCache = new WeakMap();
+
+function elColor(el, background, borderColor) {
+	let newColor = background + borderColor;
+	let oldColor = colorCache.get(el);
+
+	if (newColor != oldColor) {
+		colorCache.set(el, newColor);
+		el.style.background = background;
+		el.style.borderColor = borderColor;
+	}
+}
+
+const sizeCache = new WeakMap();
+
+function elSize(el, newWid, newHgt, centered) {
+	let newSize = newWid + "" + newHgt;
+	let oldSize = sizeCache.get(el);
+
+	if (newSize != oldSize) {
+		sizeCache.set(el, newSize);
+		el.style.height = newHgt + "px";
+		el.style.width = newWid + "px";
+		el.style.marginLeft = centered ? -newWid/2 + "px" : 0;
+		el.style.marginTop = centered ? -newHgt/2 + "px" : 0;
+	}
+}
+
+const evOpts = {passive: true};
+const evOpts2 = assign({capture: true}, evOpts);
+
+function on(ev, el, cb, capt) {
+	el.addEventListener(ev, cb, capt ? evOpts2 : evOpts);
+}
+
+function off(ev, el, cb, capt) {
+	el.removeEventListener(ev, cb, capt ? evOpts2 : evOpts);
+}
+
+setPxRatio();
+
+const months = [
+	"January",
+	"February",
+	"March",
+	"April",
+	"May",
+	"June",
+	"July",
+	"August",
+	"September",
+	"October",
+	"November",
+	"December",
+];
+
+const days = [
+	"Sunday",
+	"Monday",
+	"Tuesday",
+	"Wednesday",
+	"Thursday",
+	"Friday",
+	"Saturday",
+];
+
+function slice3(str) {
+	return str.slice(0, 3);
+}
+
+const days3 = days.map(slice3);
+
+const months3 = months.map(slice3);
+
+const engNames = {
+	MMMM: months,
+	MMM:  months3,
+	WWWW: days,
+	WWW:  days3,
+};
+
+function zeroPad2(int) {
+	return (int < 10 ? '0' : '') + int;
+}
+
+function zeroPad3(int) {
+	return (int < 10 ? '00' : int < 100 ? '0' : '') + int;
+}
+
+/*
+function suffix(int) {
+	let mod10 = int % 10;
+
+	return int + (
+		mod10 == 1 && int != 11 ? "st" :
+		mod10 == 2 && int != 12 ? "nd" :
+		mod10 == 3 && int != 13 ? "rd" : "th"
+	);
+}
+*/
+
+const subs = {
+	// 2019
+	YYYY:	d => d.getFullYear(),
+	// 19
+	YY:		d => (d.getFullYear()+'').slice(2),
+	// July
+	MMMM:	(d, names) => names.MMMM[d.getMonth()],
+	// Jul
+	MMM:	(d, names) => names.MMM[d.getMonth()],
+	// 07
+	MM:		d => zeroPad2(d.getMonth()+1),
+	// 7
+	M:		d => d.getMonth()+1,
+	// 09
+	DD:		d => zeroPad2(d.getDate()),
+	// 9
+	D:		d => d.getDate(),
+	// Monday
+	WWWW:	(d, names) => names.WWWW[d.getDay()],
+	// Mon
+	WWW:	(d, names) => names.WWW[d.getDay()],
+	// 03
+	HH:		d => zeroPad2(d.getHours()),
+	// 3
+	H:		d => d.getHours(),
+	// 9 (12hr, unpadded)
+	h:		d => {let h = d.getHours(); return h == 0 ? 12 : h > 12 ? h - 12 : h;},
+	// AM
+	AA:		d => d.getHours() >= 12 ? 'PM' : 'AM',
+	// am
+	aa:		d => d.getHours() >= 12 ? 'pm' : 'am',
+	// a
+	a:		d => d.getHours() >= 12 ? 'p' : 'a',
+	// 09
+	mm:		d => zeroPad2(d.getMinutes()),
+	// 9
+	m:		d => d.getMinutes(),
+	// 09
+	ss:		d => zeroPad2(d.getSeconds()),
+	// 9
+	s:		d => d.getSeconds(),
+	// 374
+	fff:	d => zeroPad3(d.getMilliseconds()),
+};
+
+function fmtDate(tpl, names) {
+	names = names || engNames;
+	let parts = [];
+
+	let R = /\{([a-z]+)\}|[^{]+/gi, m;
+
+	while (m = R.exec(tpl))
+		parts.push(m[0][0] == '{' ? subs[m[1]] : m[0]);
+
+	return d => {
+		let out = '';
+
+		for (let i = 0; i < parts.length; i++)
+			out += typeof parts[i] == "string" ? parts[i] : parts[i](d, names);
+
+		return out;
+	}
+}
+
+const localTz = new Intl.DateTimeFormat().resolvedOptions().timeZone;
+
+// https://stackoverflow.com/questions/15141762/how-to-initialize-a-javascript-date-to-a-particular-time-zone/53652131#53652131
+function tzDate(date, tz) {
+	let date2;
+
+	// perf optimization
+	if (tz == 'UTC' || tz == 'Etc/UTC')
+		date2 = new Date(+date + date.getTimezoneOffset() * 6e4);
+	else if (tz == localTz)
+		date2 = date;
+	else {
+		date2 = new Date(date.toLocaleString('en-US', {timeZone: tz}));
+		date2.setMilliseconds(date.getMilliseconds());
+	}
+
+	return date2;
+}
+
+//export const series = [];
+
+// default formatters:
+
+const onlyWhole = v => v % 1 == 0;
+
+const allMults = [1,2,2.5,5];
+
+// ...0.01, 0.02, 0.025, 0.05, 0.1, 0.2, 0.25, 0.5
+const decIncrs = genIncrs(10, -16, 0, allMults);
+
+// 1, 2, 2.5, 5, 10, 20, 25, 50...
+const oneIncrs = genIncrs(10, 0, 16, allMults);
+
+// 1, 2,      5, 10, 20, 25, 50...
+const wholeIncrs = oneIncrs.filter(onlyWhole);
+
+const numIncrs = decIncrs.concat(oneIncrs);
+
+const NL = "\n";
+
+const yyyy    = "{YYYY}";
+const NLyyyy  = NL + yyyy;
+const md      = "{M}/{D}";
+const NLmd    = NL + md;
+const NLmdyy  = NLmd + "/{YY}";
+
+const aa      = "{aa}";
+const hmm     = "{h}:{mm}";
+const hmmaa   = hmm + aa;
+const NLhmmaa = NL + hmmaa;
+const ss      = ":{ss}";
+
+const _ = null;
+
+function genTimeStuffs(ms) {
+	let	s  = ms * 1e3,
+		m  = s  * 60,
+		h  = m  * 60,
+		d  = h  * 24,
+		mo = d  * 30,
+		y  = d  * 365;
+
+	// min of 1e-3 prevents setting a temporal x ticks too small since Date objects cannot advance ticks smaller than 1ms
+	let subSecIncrs = ms == 1 ? genIncrs(10, 0, 3, allMults).filter(onlyWhole) : genIncrs(10, -3, 0, allMults);
+
+	let timeIncrs = subSecIncrs.concat([
+		// minute divisors (# of secs)
+		s,
+		s * 5,
+		s * 10,
+		s * 15,
+		s * 30,
+		// hour divisors (# of mins)
+		m,
+		m * 5,
+		m * 10,
+		m * 15,
+		m * 30,
+		// day divisors (# of hrs)
+		h,
+		h * 2,
+		h * 3,
+		h * 4,
+		h * 6,
+		h * 8,
+		h * 12,
+		// month divisors TODO: need more?
+		d,
+		d * 2,
+		d * 3,
+		d * 4,
+		d * 5,
+		d * 6,
+		d * 7,
+		d * 8,
+		d * 9,
+		d * 10,
+		d * 15,
+		// year divisors (# months, approx)
+		mo,
+		mo * 2,
+		mo * 3,
+		mo * 4,
+		mo * 6,
+		// century divisors
+		y,
+		y * 2,
+		y * 5,
+		y * 10,
+		y * 25,
+		y * 50,
+		y * 100,
+	]);
+
+	// [0]:   minimum num secs in the tick incr
+	// [1]:   default tick format
+	// [2-7]: rollover tick formats
+	// [8]:   mode: 0: replace [1] -> [2-7], 1: concat [1] + [2-7]
+	const _timeAxisStamps = [
+	//   tick incr    default          year                    month   day                   hour    min       sec   mode
+		[y,           yyyy,            _,                      _,      _,                    _,      _,        _,       1],
+		[d * 28,      "{MMM}",         NLyyyy,                 _,      _,                    _,      _,        _,       1],
+		[d,           md,              NLyyyy,                 _,      _,                    _,      _,        _,       1],
+		[h,           "{h}" + aa,      NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+		[m,           hmmaa,           NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+		[s,           ss,              NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+		[ms,          ss + ".{fff}",   NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+	];
+
+	// the ensures that axis ticks, values & grid are aligned to logical temporal breakpoints and not an arbitrary timestamp
+	// https://www.timeanddate.com/time/dst/
+	// https://www.timeanddate.com/time/dst/2019.html
+	// https://www.epochconverter.com/timezones
+	function timeAxisSplits(tzDate) {
+		return (self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace) => {
+			let splits = [];
+			let isYr = foundIncr >= y;
+			let isMo = foundIncr >= mo && foundIncr < y;
+
+			// get the timezone-adjusted date
+			let minDate = tzDate(scaleMin);
+			let minDateTs = roundDec(minDate * ms, 3);
+
+			// get ts of 12am (this lands us at or before the original scaleMin)
+			let minMin = mkDate(minDate.getFullYear(), isYr ? 0 : minDate.getMonth(), isMo || isYr ? 1 : minDate.getDate());
+			let minMinTs = roundDec(minMin * ms, 3);
+
+			if (isMo || isYr) {
+				let moIncr = isMo ? foundIncr / mo : 0;
+				let yrIncr = isYr ? foundIncr / y  : 0;
+			//	let tzOffset = scaleMin - minDateTs;		// needed?
+				let split = minDateTs == minMinTs ? minDateTs : roundDec(mkDate(minMin.getFullYear() + yrIncr, minMin.getMonth() + moIncr, 1) * ms, 3);
+				let splitDate = new Date(round(split / ms));
+				let baseYear = splitDate.getFullYear();
+				let baseMonth = splitDate.getMonth();
+
+				for (let i = 0; split <= scaleMax; i++) {
+					let next = mkDate(baseYear + yrIncr * i, baseMonth + moIncr * i, 1);
+					let offs = next - tzDate(roundDec(next * ms, 3));
+
+					split = roundDec((+next + offs) * ms, 3);
+
+					if (split <= scaleMax)
+						splits.push(split);
+				}
+			}
+			else {
+				let incr0 = foundIncr >= d ? d : foundIncr;
+				let tzOffset = floor(scaleMin) - floor(minDateTs);
+				let split = minMinTs + tzOffset + incrRoundUp(minDateTs - minMinTs, incr0);
+				splits.push(split);
+
+				let date0 = tzDate(split);
+
+				let prevHour = date0.getHours() + (date0.getMinutes() / m) + (date0.getSeconds() / h);
+				let incrHours = foundIncr / h;
+
+				let minSpace = self.axes[axisIdx]._space;
+				let pctSpace = foundSpace / minSpace;
+
+				while (1) {
+					split = roundDec(split + foundIncr, ms == 1 ? 0 : 3);
+
+					if (split > scaleMax)
+						break;
+
+					if (incrHours > 1) {
+						let expectedHour = floor(roundDec(prevHour + incrHours, 6)) % 24;
+						let splitDate = tzDate(split);
+						let actualHour = splitDate.getHours();
+
+						let dstShift = actualHour - expectedHour;
+
+						if (dstShift > 1)
+							dstShift = -1;
+
+						split -= dstShift * h;
+
+						prevHour = (prevHour + incrHours) % 24;
+
+						// add a tick only if it's further than 70% of the min allowed label spacing
+						let prevSplit = splits[splits.length - 1];
+						let pctIncr = roundDec((split - prevSplit) / foundIncr, 3);
+
+						if (pctIncr * pctSpace >= .7)
+							splits.push(split);
+					}
+					else
+						splits.push(split);
+				}
+			}
+
+			return splits;
+		}
+	}
+
+	return [
+		timeIncrs,
+		_timeAxisStamps,
+		timeAxisSplits,
+	];
+}
+
+const [ timeIncrsMs, _timeAxisStampsMs, timeAxisSplitsMs ] = genTimeStuffs(1);
+const [ timeIncrsS,  _timeAxisStampsS,  timeAxisSplitsS  ] = genTimeStuffs(1e-3);
+
+// base 2
+genIncrs(2, -53, 53, [1]);
+
+/*
+console.log({
+	decIncrs,
+	oneIncrs,
+	wholeIncrs,
+	numIncrs,
+	timeIncrs,
+	fixedDec,
+});
+*/
+
+function timeAxisStamps(stampCfg, fmtDate) {
+	return stampCfg.map(s => s.map((v, i) =>
+		i == 0 || i == 8 || v == null ? v : fmtDate(i == 1 || s[8] == 0 ? v : s[1] + v)
+	));
+}
+
+// TODO: will need to accept spaces[] and pull incr into the loop when grid will be non-uniform, eg for log scales.
+// currently we ignore this for months since they're *nearly* uniform and the added complexity is not worth it
+function timeAxisVals(tzDate, stamps) {
+	return (self, splits, axisIdx, foundSpace, foundIncr) => {
+		let s = stamps.find(s => foundIncr >= s[0]) || stamps[stamps.length - 1];
+
+		// these track boundaries when a full label is needed again
+		let prevYear;
+		let prevMnth;
+		let prevDate;
+		let prevHour;
+		let prevMins;
+		let prevSecs;
+
+		return splits.map(split => {
+			let date = tzDate(split);
+
+			let newYear = date.getFullYear();
+			let newMnth = date.getMonth();
+			let newDate = date.getDate();
+			let newHour = date.getHours();
+			let newMins = date.getMinutes();
+			let newSecs = date.getSeconds();
+
+			let stamp = (
+				newYear != prevYear && s[2] ||
+				newMnth != prevMnth && s[3] ||
+				newDate != prevDate && s[4] ||
+				newHour != prevHour && s[5] ||
+				newMins != prevMins && s[6] ||
+				newSecs != prevSecs && s[7] ||
+				                       s[1]
+			);
+
+			prevYear = newYear;
+			prevMnth = newMnth;
+			prevDate = newDate;
+			prevHour = newHour;
+			prevMins = newMins;
+			prevSecs = newSecs;
+
+			return stamp(date);
+		});
+	}
+}
+
+// for when axis.values is defined as a static fmtDate template string
+function timeAxisVal(tzDate, dateTpl) {
+	let stamp = fmtDate(dateTpl);
+	return (self, splits, axisIdx, foundSpace, foundIncr) => splits.map(split => stamp(tzDate(split)));
+}
+
+function mkDate(y, m, d) {
+	return new Date(y, m, d);
+}
+
+function timeSeriesStamp(stampCfg, fmtDate) {
+	return fmtDate(stampCfg);
+}
+const _timeSeriesStamp = '{YYYY}-{MM}-{DD} {h}:{mm}{aa}';
+
+function timeSeriesVal(tzDate, stamp) {
+	return (self, val) => stamp(tzDate(val));
+}
+
+function legendStroke(self, seriesIdx) {
+	let s = self.series[seriesIdx];
+	return s.width ? s.stroke(self, seriesIdx) : s.points.width ? s.points.stroke(self, seriesIdx) : null;
+}
+
+function legendFill(self, seriesIdx) {
+	return self.series[seriesIdx].fill(self, seriesIdx);
+}
+
+const legendOpts = {
+	show: true,
+	live: true,
+	isolate: false,
+	markers: {
+		show: true,
+		width: 2,
+		stroke: legendStroke,
+		fill: legendFill,
+		dash: "solid",
+	},
+	idx: null,
+	idxs: null,
+	values: [],
+};
+
+function cursorPointShow(self, si) {
+	let o = self.cursor.points;
+
+	let pt = placeDiv();
+
+	let size = o.size(self, si);
+	setStylePx(pt, WIDTH, size);
+	setStylePx(pt, HEIGHT, size);
+
+	let mar = size / -2;
+	setStylePx(pt, "marginLeft", mar);
+	setStylePx(pt, "marginTop", mar);
+
+	let width = o.width(self, si, size);
+	width && setStylePx(pt, "borderWidth", width);
+
+	return pt;
+}
+
+function cursorPointFill(self, si) {
+	let sp = self.series[si].points;
+	return sp._fill || sp._stroke;
+}
+
+function cursorPointStroke(self, si) {
+	let sp = self.series[si].points;
+	return sp._stroke || sp._fill;
+}
+
+function cursorPointSize(self, si) {
+	let sp = self.series[si].points;
+	return ptDia(sp.width, 1);
+}
+
+function dataIdx(self, seriesIdx, cursorIdx) {
+	return cursorIdx;
+}
+
+const moveTuple = [0,0];
+
+function cursorMove(self, mouseLeft1, mouseTop1) {
+	moveTuple[0] = mouseLeft1;
+	moveTuple[1] = mouseTop1;
+	return moveTuple;
+}
+
+function filtBtn0(self, targ, handle) {
+	return e => {
+		e.button == 0 && handle(e);
+	};
+}
+
+function passThru(self, targ, handle) {
+	return handle;
+}
+
+const cursorOpts = {
+	show: true,
+	x: true,
+	y: true,
+	lock: false,
+	move: cursorMove,
+	points: {
+		show:   cursorPointShow,
+		size:   cursorPointSize,
+		width:  0,
+		stroke: cursorPointStroke,
+		fill:   cursorPointFill,
+	},
+
+	bind: {
+		mousedown:   filtBtn0,
+		mouseup:     filtBtn0,
+		click:       filtBtn0,
+		dblclick:    filtBtn0,
+
+		mousemove:   passThru,
+		mouseleave:  passThru,
+		mouseenter:  passThru,
+	},
+
+	drag: {
+		setScale: true,
+		x: true,
+		y: false,
+		dist: 0,
+		uni: null,
+		_x: false,
+		_y: false,
+	},
+
+	focus: {
+		prox: -1,
+	},
+
+	left: -10,
+	top: -10,
+	idx: null,
+	dataIdx,
+	idxs: null,
+};
+
+const grid = {
+	show: true,
+	stroke: "rgba(0,0,0,0.07)",
+	width: 2,
+//	dash: [],
+	filter: retArg1,
+};
+
+const ticks = assign({}, grid, {size: 10});
+
+const font      = '12px system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"';
+const labelFont = "bold " + font;
+const lineMult = 1.5;		// font-size multiplier
+
+const xAxisOpts = {
+	show: true,
+	scale: "x",
+	stroke: hexBlack,
+	space: 50,
+	gap: 5,
+	size: 50,
+	labelGap: 0,
+	labelSize: 30,
+	labelFont,
+	side: 2,
+//	class: "x-vals",
+//	incrs: timeIncrs,
+//	values: timeVals,
+//	filter: retArg1,
+	grid,
+	ticks,
+	font,
+	rotate: 0,
+};
+
+const numSeriesLabel = "Value";
+const timeSeriesLabel = "Time";
+
+const xSeriesOpts = {
+	show: true,
+	scale: "x",
+	auto: false,
+	sorted: 1,
+//	label: "Time",
+//	value: v => stamp(new Date(v * 1e3)),
+
+	// internal caches
+	min: inf,
+	max: -inf,
+	idxs: [],
+};
+
+function numAxisVals(self, splits, axisIdx, foundSpace, foundIncr) {
+	return splits.map(v => v == null ? "" : fmtNum(v));
+}
+
+function numAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	let splits = [];
+
+	let numDec = fixedDec.get(foundIncr) || 0;
+
+	scaleMin = forceMin ? scaleMin : roundDec(incrRoundUp(scaleMin, foundIncr), numDec);
+
+	for (let val = scaleMin; val <= scaleMax; val = roundDec(val + foundIncr, numDec))
+		splits.push(Object.is(val, -0) ? 0 : val);		// coalesces -0
+
+	return splits;
+}
+
+// this doesnt work for sin, which needs to come off from 0 independently in pos and neg dirs
+function logAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	const splits = [];
+
+	const logBase = self.scales[self.axes[axisIdx].scale].log;
+
+	const logFn = logBase == 10 ? log10 : log2;
+
+	const exp = floor(logFn(scaleMin));
+
+	foundIncr = pow(logBase, exp);
+
+	if (exp < 0)
+		foundIncr = roundDec(foundIncr, -exp);
+
+	let split = scaleMin;
+
+	do {
+		splits.push(split);
+		split = roundDec(split + foundIncr, fixedDec.get(foundIncr));
+
+		if (split >= foundIncr * logBase)
+			foundIncr = split;
+
+	} while (split <= scaleMax);
+
+	return splits;
+}
+
+function asinhAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+	let sc = self.scales[self.axes[axisIdx].scale];
+
+	let linthresh = sc.asinh;
+
+	let posSplits = scaleMax > linthresh ? logAxisSplits(self, axisIdx, max(linthresh, scaleMin), scaleMax, foundIncr) : [linthresh];
+	let zero = scaleMax >= 0 && scaleMin <= 0 ? [0] : [];
+	let negSplits = scaleMin < -linthresh ? logAxisSplits(self, axisIdx, max(linthresh, -scaleMax), -scaleMin, foundIncr): [linthresh];
+
+	return negSplits.reverse().map(v => -v).concat(zero, posSplits);
+}
+
+const RE_ALL   = /./;
+const RE_12357 = /[12357]/;
+const RE_125   = /[125]/;
+const RE_1     = /1/;
+
+function logAxisValsFilt(self, splits, axisIdx, foundSpace, foundIncr) {
+	let axis = self.axes[axisIdx];
+	let scaleKey = axis.scale;
+	let sc = self.scales[scaleKey];
+
+	if (sc.distr == 3 && sc.log == 2)
+		return splits;
+
+	let valToPos = self.valToPos;
+
+	let minSpace = axis._space;
+
+	let _10 = valToPos(10, scaleKey);
+
+	let re = (
+		valToPos(9, scaleKey) - _10 >= minSpace ? RE_ALL :
+		valToPos(7, scaleKey) - _10 >= minSpace ? RE_12357 :
+		valToPos(5, scaleKey) - _10 >= minSpace ? RE_125 :
+		RE_1
+	);
+
+	return splits.map(v => ((sc.distr == 4 && v == 0) || re.test(v)) ? v : null);
+}
+
+function numSeriesVal(self, val) {
+	return val == null ? "" : fmtNum(val);
+}
+
+const yAxisOpts = {
+	show: true,
+	scale: "y",
+	stroke: hexBlack,
+	space: 30,
+	gap: 5,
+	size: 50,
+	labelGap: 0,
+	labelSize: 30,
+	labelFont,
+	side: 3,
+//	class: "y-vals",
+//	incrs: numIncrs,
+//	values: (vals, space) => vals,
+//	filter: retArg1,
+	grid,
+	ticks,
+	font,
+	rotate: 0,
+};
+
+// takes stroke width
+function ptDia(width, mult) {
+	let dia = 3 + (width || 1) * 2;
+	return roundDec(dia * mult, 3);
+}
+
+function seriesPointsShow(self, si) {
+	let { scale, idxs } = self.series[0];
+	let xData = self._data[0];
+	let p0 = self.valToPos(xData[idxs[0]], scale, true);
+	let p1 = self.valToPos(xData[idxs[1]], scale, true);
+	let dim = abs(p1 - p0);
+
+	let s = self.series[si];
+//	const dia = ptDia(s.width, pxRatio);
+	let maxPts = dim / (s.points.space * pxRatio);
+	return idxs[1] - idxs[0] <= maxPts;
+}
+
+function seriesFillTo(self, seriesIdx, dataMin, dataMax) {
+	let scale = self.scales[self.series[seriesIdx].scale];
+	let isUpperBandEdge = self.bands && self.bands.some(b => b.series[0] == seriesIdx);
+	return scale.distr == 3 || isUpperBandEdge ? scale.min : 0;
+}
+
+const facet = {
+	scale: null,
+	auto: true,
+
+	// internal caches
+	min: inf,
+	max: -inf,
+};
+
+const xySeriesOpts = {
+	show: true,
+	auto: true,
+	sorted: 0,
+	alpha: 1,
+	facets: [
+		assign({}, facet, {scale: 'x'}),
+		assign({}, facet, {scale: 'y'}),
+	],
+};
+
+const ySeriesOpts = {
+	scale: "y",
+	auto: true,
+	sorted: 0,
+	show: true,
+	spanGaps: false,
+	gaps: (self, seriesIdx, idx0, idx1, nullGaps) => nullGaps,
+	alpha: 1,
+	points: {
+		show: seriesPointsShow,
+		filter: null,
+	//  paths:
+	//	stroke: "#000",
+	//	fill: "#fff",
+	//	width: 1,
+	//	size: 10,
+	},
+//	label: "Value",
+//	value: v => v,
+	values: null,
+
+	// internal caches
+	min: inf,
+	max: -inf,
+	idxs: [],
+
+	path: null,
+	clip: null,
+};
+
+function clampScale(self, val, scaleMin, scaleMax, scaleKey) {
+/*
+	if (val < 0) {
+		let cssHgt = self.bbox.height / pxRatio;
+		let absPos = self.valToPos(abs(val), scaleKey);
+		let fromBtm = cssHgt - absPos;
+		return self.posToVal(cssHgt + fromBtm, scaleKey);
+	}
+*/
+	return scaleMin / 10;
+}
+
+const xScaleOpts = {
+	time: FEAT_TIME,
+	auto: true,
+	distr: 1,
+	log: 10,
+	asinh: 1,
+	min: null,
+	max: null,
+	dir: 1,
+	ori: 0,
+};
+
+const yScaleOpts = assign({}, xScaleOpts, {
+	time: false,
+	ori: 1,
+});
+
+const syncs = {};
+
+function _sync(key, opts) {
+	let s = syncs[key];
+
+	if (!s) {
+		s = {
+			key,
+			plots: [],
+			sub(plot) {
+				s.plots.push(plot);
+			},
+			unsub(plot) {
+				s.plots = s.plots.filter(c => c != plot);
+			},
+			pub(type, self, x, y, w, h, i) {
+				for (let j = 0; j < s.plots.length; j++)
+					s.plots[j] != self && s.plots[j].pub(type, self, x, y, w, h, i);
+			},
+		};
+
+		if (key != null)
+			syncs[key] = s;
+	}
+
+	return s;
+}
+
+const BAND_CLIP_FILL   = 1 << 0;
+const BAND_CLIP_STROKE = 1 << 1;
+
+function orient(u, seriesIdx, cb) {
+	const series = u.series[seriesIdx];
+	const scales = u.scales;
+	const bbox   = u.bbox;
+	const scaleX = u.mode == 2 ? scales[series.facets[0].scale] : scales[u.series[0].scale];
+
+	let dx = u._data[0],
+		dy = u._data[seriesIdx],
+		sx = scaleX,
+		sy = u.mode == 2 ? scales[series.facets[1].scale] : scales[series.scale],
+		l = bbox.left,
+		t = bbox.top,
+		w = bbox.width,
+		h = bbox.height,
+		H = u.valToPosH,
+		V = u.valToPosV;
+
+	return (sx.ori == 0
+		? cb(
+			series,
+			dx,
+			dy,
+			sx,
+			sy,
+			H,
+			V,
+			l,
+			t,
+			w,
+			h,
+			moveToH,
+			lineToH,
+			rectH,
+			arcH,
+			bezierCurveToH,
+		)
+		: cb(
+			series,
+			dx,
+			dy,
+			sx,
+			sy,
+			V,
+			H,
+			t,
+			l,
+			h,
+			w,
+			moveToV,
+			lineToV,
+			rectV,
+			arcV,
+			bezierCurveToV,
+		)
+	);
+}
+
+// creates inverted band clip path (towards from stroke path -> yMax)
+function clipBandLine(self, seriesIdx, idx0, idx1, strokePath) {
+	return orient(self, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+		let pxRound = series.pxRound;
+
+		const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+		const lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+		let frIdx, toIdx;
+
+		if (dir == 1) {
+			frIdx = idx0;
+			toIdx = idx1;
+		}
+		else {
+			frIdx = idx1;
+			toIdx = idx0;
+		}
+
+		// path start
+		let x0 = pxRound(valToPosX(dataX[frIdx], scaleX, xDim, xOff));
+		let y0 = pxRound(valToPosY(dataY[frIdx], scaleY, yDim, yOff));
+		// path end x
+		let x1 = pxRound(valToPosX(dataX[toIdx], scaleX, xDim, xOff));
+		// upper y limit
+		let yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+
+		let clip = new Path2D(strokePath);
+
+		lineTo(clip, x1, yLimit);
+		lineTo(clip, x0, yLimit);
+		lineTo(clip, x0, y0);
+
+		return clip;
+	});
+}
+
+function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
+	let clip = null;
+
+	// create clip path (invert gaps and non-gaps)
+	if (gaps.length > 0) {
+		clip = new Path2D();
+
+		const rect = ori == 0 ? rectH : rectV;
+
+		let prevGapEnd = plotLft;
+
+		for (let i = 0; i < gaps.length; i++) {
+			let g = gaps[i];
+
+			if (g[1] > g[0]) {
+				let w = g[0] - prevGapEnd;
+
+				w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+
+				prevGapEnd = g[1];
+			}
+		}
+
+		let w = plotLft + plotWid - prevGapEnd;
+
+		w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+	}
+
+	return clip;
+}
+
+function addGap(gaps, fromX, toX) {
+	let prevGap = gaps[gaps.length - 1];
+
+	if (prevGap && prevGap[0] == fromX)			// TODO: gaps must be encoded at stroke widths?
+		prevGap[1] = toX;
+	else
+		gaps.push([fromX, toX]);
+}
+
+function pxRoundGen(pxAlign) {
+	return pxAlign == 0 ? retArg0 : pxAlign == 1 ? round : v => incrRound(v, pxAlign);
+}
+
+function rect(ori) {
+	let moveTo = ori == 0 ?
+		moveToH :
+		moveToV;
+
+	let arcTo = ori == 0 ?
+		(p, x1, y1, x2, y2, r) => { p.arcTo(x1, y1, x2, y2, r); } :
+		(p, y1, x1, y2, x2, r) => { p.arcTo(x1, y1, x2, y2, r); };
+
+	let rect = ori == 0 ?
+		(p, x, y, w, h) => { p.rect(x, y, w, h); } :
+		(p, y, x, h, w) => { p.rect(x, y, w, h); };
+
+	return (p, x, y, w, h, r = 0) => {
+		if (r == 0)
+			rect(p, x, y, w, h);
+		else {
+			r = min(r, w / 2, h / 2);
+
+			// adapted from https://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-using-html-canvas/7838871#7838871
+			moveTo(p, x + r, y);
+			arcTo(p, x + w, y, x + w, y + h, r);
+			arcTo(p, x + w, y + h, x, y + h, r);
+			arcTo(p, x, y + h, x, y, r);
+			arcTo(p, x, y, x + w, y, r);
+			p.closePath();
+		}
+	};
+}
+
+// orientation-inverting canvas functions
+const moveToH = (p, x, y) => { p.moveTo(x, y); };
+const moveToV = (p, y, x) => { p.moveTo(x, y); };
+const lineToH = (p, x, y) => { p.lineTo(x, y); };
+const lineToV = (p, y, x) => { p.lineTo(x, y); };
+const rectH = rect(0);
+const rectV = rect(1);
+const arcH = (p, x, y, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+const arcV = (p, y, x, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+const bezierCurveToH = (p, bp1x, bp1y, bp2x, bp2y, p2x, p2y) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+const bezierCurveToV = (p, bp1y, bp1x, bp2y, bp2x, p2y, p2x) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+
+// TODO: drawWrap(seriesIdx, drawPoints) (save, restore, translate, clip)
+function points(opts) {
+	return (u, seriesIdx, idx0, idx1, filtIdxs) => {
+	//	log("drawPoints()", arguments);
+
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let { pxRound, points } = series;
+
+			let moveTo, arc;
+
+			if (scaleX.ori == 0) {
+				moveTo = moveToH;
+				arc = arcH;
+			}
+			else {
+				moveTo = moveToV;
+				arc = arcV;
+			}
+
+			const width = roundDec(points.width * pxRatio, 3);
+
+			let rad = (points.size - points.width) / 2 * pxRatio;
+			let dia = roundDec(rad * 2, 3);
+
+			let fill = new Path2D();
+			let clip = new Path2D();
+
+			let { left: lft, top: top, width: wid, height: hgt } = u.bbox;
+
+			rectH(clip,
+				lft - dia,
+				top - dia,
+				wid + dia * 2,
+				hgt + dia * 2,
+			);
+
+			const drawPoint = pi => {
+				if (dataY[pi] != null) {
+					let x = pxRound(valToPosX(dataX[pi], scaleX, xDim, xOff));
+					let y = pxRound(valToPosY(dataY[pi], scaleY, yDim, yOff));
+
+					moveTo(fill, x + rad, y);
+					arc(fill, x, y, rad, 0, PI * 2);
+				}
+			};
+
+			if (filtIdxs)
+				filtIdxs.forEach(drawPoint);
+			else {
+				for (let pi = idx0; pi <= idx1; pi++)
+					drawPoint(pi);
+			}
+
+			return {
+				stroke: width > 0 ? fill : null,
+				fill,
+				clip,
+				flags: BAND_CLIP_FILL | BAND_CLIP_STROKE,
+			};
+		});
+	};
+}
+
+function _drawAcc(lineTo) {
+	return (stroke, accX, minY, maxY, inY, outY) => {
+		if (minY != maxY) {
+			if (inY != minY && outY != minY)
+				lineTo(stroke, accX, minY);
+			if (inY != maxY && outY != maxY)
+				lineTo(stroke, accX, maxY);
+
+			lineTo(stroke, accX, outY);
+		}
+	};
+}
+
+const drawAccH = _drawAcc(lineToH);
+const drawAccV = _drawAcc(lineToV);
+
+function linear() {
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let lineTo, drawAcc;
+
+			if (scaleX.ori == 0) {
+				lineTo = lineToH;
+				drawAcc = drawAccH;
+			}
+			else {
+				lineTo = lineToV;
+				drawAcc = drawAccV;
+			}
+
+			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			let minY = inf,
+				maxY = -inf,
+				inY, outY, outX, drawnAtX;
+
+			let gaps = [];
+
+			let accX = pxRound(valToPosX(dataX[dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let accGaps = false;
+			let prevYNull = false;
+
+			// data edges
+			let lftIdx = nonNullIdx(dataY, idx0, idx1,  1 * dir);
+			let rgtIdx = nonNullIdx(dataY, idx0, idx1, -1 * dir);
+			let lftX =  pxRound(valToPosX(dataX[lftIdx], scaleX, xDim, xOff));
+			let rgtX =  pxRound(valToPosX(dataX[rgtIdx], scaleX, xDim, xOff));
+
+			if (lftX > xOff)
+				addGap(gaps, xOff, lftX);
+
+			for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+				let x = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+				if (x == accX) {
+					if (dataY[i] != null) {
+						outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+
+						if (minY == inf) {
+							lineTo(stroke, x, outY);
+							inY = outY;
+						}
+
+						minY = min(outY, minY);
+						maxY = max(outY, maxY);
+					}
+					else if (dataY[i] === null)
+						accGaps = prevYNull = true;
+				}
+				else {
+					let _addGap = false;
+
+					if (minY != inf) {
+						drawAcc(stroke, accX, minY, maxY, inY, outY);
+						outX = drawnAtX = accX;
+					}
+					else if (accGaps) {
+						_addGap = true;
+						accGaps = false;
+					}
+
+					if (dataY[i] != null) {
+						outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+						lineTo(stroke, x, outY);
+						minY = maxY = inY = outY;
+
+						// prior pixel can have data but still start a gap if ends with null
+						if (prevYNull && x - accX > 1)
+							_addGap = true;
+
+						prevYNull = false;
+					}
+					else {
+						minY = inf;
+						maxY = -inf;
+
+						if (dataY[i] === null) {
+							accGaps = true;
+
+							if (x - accX > 1)
+								_addGap = true;
+						}
+					}
+
+					_addGap && addGap(gaps, outX, x);
+
+					accX = x;
+				}
+			}
+
+			if (minY != inf && minY != maxY && drawnAtX != accX)
+				drawAcc(stroke, accX, minY, maxY, inY, outY);
+
+			if (rgtX < xOff + xDim)
+				addGap(gaps, rgtX, xOff + xDim);
+
+			if (series.fill != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = pxRound(valToPosY(series.fillTo(u, seriesIdx, series.min, series.max), scaleY, yDim, yOff));
+
+				lineTo(fill, rgtX, fillTo);
+				lineTo(fill, lftX, fillTo);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+		});
+	};
+}
+
+function stepped(opts) {
+	const align = ifNull(opts.align, 1);
+	// whether to draw ascenders/descenders at null/gap bondaries
+	const ascDesc = ifNull(opts.ascDesc, false);
+
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+			const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+			let gaps = [];
+			let inGap = false;
+			let prevYPos  = pxRound(valToPosY(dataY[_dir == 1 ? idx0 : idx1], scaleY, yDim, yOff));
+			let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let prevXPos = firstXPos;
+
+			lineTo(stroke, firstXPos, prevYPos);
+
+			for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+				let yVal1 = dataY[i];
+
+				let x1 = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+				if (yVal1 == null) {
+					if (yVal1 === null) {
+						addGap(gaps, prevXPos, x1);
+						inGap = true;
+					}
+					continue;
+				}
+
+				let y1 = pxRound(valToPosY(yVal1, scaleY, yDim, yOff));
+
+				if (inGap) {
+					addGap(gaps, prevXPos, x1);
+					inGap = false;
+				}
+
+				if (align == 1)
+					lineTo(stroke, x1, prevYPos);
+				else
+					lineTo(stroke, prevXPos, y1);
+
+				lineTo(stroke, x1, y1);
+
+				prevYPos = y1;
+				prevXPos = x1;
+			}
+
+			if (series.fill != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+				let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+				lineTo(fill, prevXPos, minY);
+				lineTo(fill, firstXPos, minY);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			// expand/contract clips for ascenders/descenders
+			let halfStroke = (series.width * pxRatio) / 2;
+			let startsOffset = (ascDesc || align ==  1) ?  halfStroke : -halfStroke;
+			let endsOffset   = (ascDesc || align == -1) ? -halfStroke :  halfStroke;
+
+			gaps.forEach(g => {
+				g[0] += startsOffset;
+				g[1] += endsOffset;
+			});
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+		});
+	};
+}
+
+function bars(opts) {
+	opts = opts || EMPTY_OBJ;
+	const size = ifNull(opts.size, [0.6, inf, 1]);
+	const align = opts.align || 0;
+	const extraGap = (opts.gap || 0) * pxRatio;
+
+	const radius = ifNull(opts.radius, 0);
+
+	const gapFactor = 1 - size[0];
+	const maxWidth  = ifNull(size[1], inf) * pxRatio;
+	const minWidth  = ifNull(size[2], 1) * pxRatio;
+
+	const disp = ifNull(opts.disp, EMPTY_OBJ);
+	const _each = ifNull(opts.each, _ => {});
+
+	const { fill: dispFills, stroke: dispStrokes } = disp;
+
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			const _dirX = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+			const _dirY = scaleY.dir * (scaleY.ori == 1 ? 1 : -1);
+
+			let rect = scaleX.ori == 0 ? rectH : rectV;
+
+			let each = scaleX.ori == 0 ? _each : (u, seriesIdx, i, top, lft, hgt, wid) => {
+				_each(u, seriesIdx, i, lft, top, wid, hgt);
+			};
+
+			let fillToY = series.fillTo(u, seriesIdx, series.min, series.max);
+
+			let y0Pos = valToPosY(fillToY, scaleY, yDim, yOff);
+
+			// barWid is to center of stroke
+			let xShift, barWid;
+
+			let strokeWidth = pxRound(series.width * pxRatio);
+
+			let multiPath = false;
+
+			let fillColors = null;
+			let fillPaths = null;
+			let strokeColors = null;
+			let strokePaths = null;
+
+			if (dispFills != null && dispStrokes != null) {
+				multiPath = true;
+
+				fillColors = dispFills.values(u, seriesIdx, idx0, idx1);
+				fillPaths = new Map();
+				(new Set(fillColors)).forEach(color => {
+					if (color != null)
+						fillPaths.set(color, new Path2D());
+				});
+
+				strokeColors = dispStrokes.values(u, seriesIdx, idx0, idx1);
+				strokePaths = new Map();
+				(new Set(strokeColors)).forEach(color => {
+					if (color != null)
+						strokePaths.set(color, new Path2D());
+				});
+			}
+
+			let { x0, size } = disp;
+
+			if (x0 != null && size != null) {
+				dataX = x0.values(u, seriesIdx, idx0, idx1);
+
+				if (x0.unit == 2)
+					dataX = dataX.map(pct => u.posToVal(xOff + pct * xDim, scaleX.key, true));
+
+				// assumes uniform sizes, for now
+				let sizes = size.values(u, seriesIdx, idx0, idx1);
+
+				if (size.unit == 2)
+					barWid = sizes[0] * xDim;
+				else
+					barWid = valToPosX(sizes[0], scaleX, xDim, xOff) - valToPosX(0, scaleX, xDim, xOff); // assumes linear scale (delta from 0)
+
+				barWid = pxRound(barWid - strokeWidth);
+
+				xShift = (_dirX == 1 ? -strokeWidth / 2 : barWid + strokeWidth / 2);
+			}
+			else {
+				let colWid = xDim;
+
+				if (dataX.length > 1) {
+					// prior index with non-undefined y data
+					let prevIdx = null;
+
+					// scan full dataset for smallest adjacent delta
+					// will not work properly for non-linear x scales, since does not do expensive valToPosX calcs till end
+					for (let i = 0, minDelta = Infinity; i < dataX.length; i++) {
+						if (dataY[i] !== undefined) {
+							if (prevIdx != null) {
+								let delta = abs(dataX[i] - dataX[prevIdx]);
+
+								if (delta < minDelta) {
+									minDelta = delta;
+									colWid = abs(valToPosX(dataX[i], scaleX, xDim, xOff) - valToPosX(dataX[prevIdx], scaleX, xDim, xOff));
+								}
+							}
+
+							prevIdx = i;
+						}
+					}
+				}
+
+				let gapWid = colWid * gapFactor;
+
+				barWid = pxRound(min(maxWidth, max(minWidth, colWid - gapWid)) - strokeWidth - extraGap);
+
+				xShift = (align == 0 ? barWid / 2 : align == _dirX ? 0 : barWid) - align * _dirX * extraGap / 2;
+			}
+
+			const _paths = {stroke: null, fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL | BAND_CLIP_STROKE};  // disp, geom
+
+			const hasBands = u.bands.length > 0;
+			let yLimit;
+
+			if (hasBands) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = new Path2D();
+				yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+			}
+
+			const stroke = multiPath ? null : new Path2D();
+			const band = _paths.band;
+
+			for (let i = _dirX == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dirX) {
+				let yVal = dataY[i];
+
+			/*
+				// interpolate upwards band clips
+				if (yVal == null) {
+				//	if (hasBands)
+				//		yVal = costlyLerp(i, idx0, idx1, _dirX, dataY);
+				//	else
+						continue;
+				}
+			*/
+
+				let xVal = scaleX.distr != 2 || disp != null ? dataX[i] : i;
+
+				// TODO: all xPos can be pre-computed once for all series in aligned set
+				let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+				let yPos = valToPosY(ifNull(yVal, fillToY) , scaleY, yDim, yOff);
+
+				let lft = pxRound(xPos - xShift);
+				let btm = pxRound(max(yPos, y0Pos));
+				let top = pxRound(min(yPos, y0Pos));
+				// this includes the stroke
+				let barHgt = btm - top;
+
+				let r = radius * barWid;
+
+				if (yVal != null) {  // && yVal != fillToY (0 height bar)
+					if (multiPath) {
+						if (strokeWidth > 0 && strokeColors[i] != null)
+							rect(strokePaths.get(strokeColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+						if (fillColors[i] != null)
+							rect(fillPaths.get(fillColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+					}
+					else
+						rect(stroke, lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+					each(u, seriesIdx, i,
+						lft    - strokeWidth / 2,
+						top,
+						barWid + strokeWidth,
+						barHgt,
+					);
+				}
+
+				if (hasBands) {
+					if (_dirY == 1) {
+						btm = top;
+						top = yLimit;
+					}
+					else {
+						top = btm;
+						btm = yLimit;
+					}
+
+					barHgt = btm - top;
+
+					rect(band, lft - strokeWidth / 2, top, barWid + strokeWidth, max(0, barHgt), 0);
+				}
+			}
+
+			if (strokeWidth > 0)
+				_paths.stroke = multiPath ? strokePaths : stroke;
+
+			_paths.fill = multiPath ? fillPaths : stroke;
+
+			return _paths;
+		});
+	};
+}
+
+function splineInterp(interp, opts) {
+	return (u, seriesIdx, idx0, idx1) => {
+		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			let moveTo, bezierCurveTo, lineTo;
+
+			if (scaleX.ori == 0) {
+				moveTo = moveToH;
+				lineTo = lineToH;
+				bezierCurveTo = bezierCurveToH;
+			}
+			else {
+				moveTo = moveToV;
+				lineTo = lineToV;
+				bezierCurveTo = bezierCurveToV;
+			}
+
+			const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+			let gaps = [];
+			let inGap = false;
+			let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+			let prevXPos = firstXPos;
+
+			let xCoords = [];
+			let yCoords = [];
+
+			for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+				let yVal = dataY[i];
+				let xVal = dataX[i];
+				let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+
+				if (yVal == null) {
+					if (yVal === null) {
+						addGap(gaps, prevXPos, xPos);
+						inGap = true;
+					}
+					continue;
+				}
+				else {
+					if (inGap) {
+						addGap(gaps, prevXPos, xPos);
+						inGap = false;
+					}
+
+					xCoords.push((prevXPos = xPos));
+					yCoords.push(valToPosY(dataY[i], scaleY, yDim, yOff));
+				}
+			}
+
+			const _paths = {stroke: interp(xCoords, yCoords, moveTo, lineTo, bezierCurveTo, pxRound), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+			const stroke = _paths.stroke;
+
+			if (series.fill != null && stroke != null) {
+				let fill = _paths.fill = new Path2D(stroke);
+
+				let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+				let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+				lineTo(fill, prevXPos, minY);
+				lineTo(fill, firstXPos, minY);
+			}
+
+			_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+			if (!series.spanGaps)
+				_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+			if (u.bands.length > 0) {
+				// ADDL OPT: only create band clips for series that are band lower edges
+				// if (b.series[1] == i && _paths.band == null)
+				_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+			}
+
+			return _paths;
+
+			//  if FEAT_PATHS: false in rollup.config.js
+			//	u.ctx.save();
+			//	u.ctx.beginPath();
+			//	u.ctx.rect(u.bbox.left, u.bbox.top, u.bbox.width, u.bbox.height);
+			//	u.ctx.clip();
+			//	u.ctx.strokeStyle = u.series[sidx].stroke;
+			//	u.ctx.stroke(stroke);
+			//	u.ctx.fillStyle = u.series[sidx].fill;
+			//	u.ctx.fill(fill);
+			//	u.ctx.restore();
+			//	return null;
+		});
+	};
+}
+
+function monotoneCubic(opts) {
+	return splineInterp(_monotoneCubic);
+}
+
+// Monotone Cubic Spline interpolation, adapted from the Chartist.js implementation:
+// https://github.com/gionkunz/chartist-js/blob/e7e78201bffe9609915e5e53cfafa29a5d6c49f9/src/scripts/interpolation.js#L240-L369
+function _monotoneCubic(xs, ys, moveTo, lineTo, bezierCurveTo, pxRound) {
+	const n = xs.length;
+
+	if (n < 2)
+		return null;
+
+	const path = new Path2D();
+
+	moveTo(path, xs[0], ys[0]);
+
+	if (n == 2)
+		lineTo(path, xs[1], ys[1]);
+	else {
+		let ms  = Array(n),
+			ds  = Array(n - 1),
+			dys = Array(n - 1),
+			dxs = Array(n - 1);
+
+		// calc deltas and derivative
+		for (let i = 0; i < n - 1; i++) {
+			dys[i] = ys[i + 1] - ys[i];
+			dxs[i] = xs[i + 1] - xs[i];
+			ds[i]  = dys[i] / dxs[i];
+		}
+
+		// determine desired slope (m) at each point using Fritsch-Carlson method
+		// http://math.stackexchange.com/questions/45218/implementation-of-monotone-cubic-interpolation
+		ms[0] = ds[0];
+
+		for (let i = 1; i < n - 1; i++) {
+			if (ds[i] === 0 || ds[i - 1] === 0 || (ds[i - 1] > 0) !== (ds[i] > 0))
+				ms[i] = 0;
+			else {
+				ms[i] = 3 * (dxs[i - 1] + dxs[i]) / (
+					(2 * dxs[i] + dxs[i - 1]) / ds[i - 1] +
+					(dxs[i] + 2 * dxs[i - 1]) / ds[i]
+				);
+
+				if (!isFinite(ms[i]))
+					ms[i] = 0;
+			}
+		}
+
+		ms[n - 1] = ds[n - 2];
+
+		for (let i = 0; i < n - 1; i++) {
+			bezierCurveTo(
+				path,
+				xs[i] + dxs[i] / 3,
+				ys[i] + ms[i] * dxs[i] / 3,
+				xs[i + 1] - dxs[i] / 3,
+				ys[i + 1] - ms[i + 1] * dxs[i] / 3,
+				xs[i + 1],
+				ys[i + 1],
+			);
+		}
+	}
+
+	return path;
+}
+
+const cursorPlots = new Set();
+
+function invalidateRects() {
+	cursorPlots.forEach(u => {
+		u.syncRect(true);
+	});
+}
+
+on(resize, win, invalidateRects);
+on(scroll, win, invalidateRects, true);
+
+const linearPath = linear() ;
+const pointsPath = points() ;
+
+function setDefaults(d, xo, yo, initY) {
+	let d2 = initY ? [d[0], d[1]].concat(d.slice(2)) : [d[0]].concat(d.slice(1));
+	return d2.map((o, i) => setDefault(o, i, xo, yo));
+}
+
+function setDefaults2(d, xyo) {
+	return d.map((o, i) => i == 0 ? null : assign({}, xyo, o));  // todo: assign() will not merge facet arrays
+}
+
+function setDefault(o, i, xo, yo) {
+	return assign({}, (i == 0 ? xo : yo), o);
+}
+
+function snapNumX(self, dataMin, dataMax) {
+	return dataMin == null ? nullNullTuple : [dataMin, dataMax];
+}
+
+const snapTimeX = snapNumX;
+
+// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+function snapNumY(self, dataMin, dataMax) {
+	return dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, rangePad, true);
+}
+
+function snapLogY(self, dataMin, dataMax, scale) {
+	return dataMin == null ? nullNullTuple : rangeLog(dataMin, dataMax, self.scales[scale].log, false);
+}
+
+const snapLogX = snapLogY;
+
+function snapAsinhY(self, dataMin, dataMax, scale) {
+	return dataMin == null ? nullNullTuple : rangeAsinh(dataMin, dataMax, self.scales[scale].log, false);
+}
+
+const snapAsinhX = snapAsinhY;
+
+// dim is logical (getClientBoundingRect) pixels, not canvas pixels
+function findIncr(minVal, maxVal, incrs, dim, minSpace) {
+	let intDigits = max(numIntDigits(minVal), numIntDigits(maxVal));
+
+	let delta = maxVal - minVal;
+
+	let incrIdx = closestIdx((minSpace / dim) * delta, incrs);
+
+	do {
+		let foundIncr = incrs[incrIdx];
+		let foundSpace = dim * foundIncr / delta;
+
+		if (foundSpace >= minSpace && intDigits + (foundIncr < 5 ? fixedDec.get(foundIncr) : 0) <= 17)
+			return [foundIncr, foundSpace];
+	} while (++incrIdx < incrs.length);
+
+	return [0, 0];
+}
+
+function pxRatioFont(font) {
+	let fontSize, fontSizeCss;
+	font = font.replace(/(\d+)px/, (m, p1) => (fontSize = round((fontSizeCss = +p1) * pxRatio)) + 'px');
+	return [font, fontSize, fontSizeCss];
+}
+
+function syncFontSize(axis) {
+	if (axis.show) {
+		[axis.font, axis.labelFont].forEach(f => {
+			let size = roundDec(f[2] * pxRatio, 1);
+			f[0] = f[0].replace(/[0-9.]+px/, size + 'px');
+			f[1] = size;
+		});
+	}
+}
+
+function uPlot(opts, data, then) {
+	const self = {
+		mode: ifNull(opts.mode, 1),
+	};
+
+	const mode = self.mode;
+
+	// TODO: cache denoms & mins scale.cache = {r, min, }
+	function getValPct(val, scale) {
+		let _val = (
+			scale.distr == 3 ? log10(val > 0 ? val : scale.clamp(self, val, scale.min, scale.max, scale.key)) :
+			scale.distr == 4 ? asinh(val, scale.asinh) :
+			val
+		);
+
+		return (_val - scale._min) / (scale._max - scale._min);
+	}
+
+	function getHPos(val, scale, dim, off) {
+		let pct = getValPct(val, scale);
+		return off + dim * (scale.dir == -1 ? (1 - pct) : pct);
+	}
+
+	function getVPos(val, scale, dim, off) {
+		let pct = getValPct(val, scale);
+		return off + dim * (scale.dir == -1 ? pct : (1 - pct));
+	}
+
+	function getPos(val, scale, dim, off) {
+		return scale.ori == 0 ? getHPos(val, scale, dim, off) : getVPos(val, scale, dim, off);
+	}
+
+	self.valToPosH = getHPos;
+	self.valToPosV = getVPos;
+
+	let ready = false;
+	self.status = 0;
+
+	const root = self.root = placeDiv(UPLOT);
+
+	if (opts.id != null)
+		root.id = opts.id;
+
+	addClass(root, opts.class);
+
+	if (opts.title) {
+		let title = placeDiv(TITLE, root);
+		title.textContent = opts.title;
+	}
+
+	const can = placeTag("canvas");
+	const ctx = self.ctx = can.getContext("2d");
+
+	const wrap = placeDiv(WRAP, root);
+	const under = self.under = placeDiv(UNDER, wrap);
+	wrap.appendChild(can);
+	const over = self.over = placeDiv(OVER, wrap);
+
+	opts = copy(opts);
+
+	const pxAlign = +ifNull(opts.pxAlign, 1);
+
+	const pxRound = pxRoundGen(pxAlign);
+
+	(opts.plugins || []).forEach(p => {
+		if (p.opts)
+			opts = p.opts(self, opts) || opts;
+	});
+
+	const ms = opts.ms || 1e-3;
+
+	const series  = self.series = mode == 1 ?
+		setDefaults(opts.series || [], xSeriesOpts, ySeriesOpts, false) :
+		setDefaults2(opts.series || [null], xySeriesOpts);
+	const axes    = self.axes   = setDefaults(opts.axes   || [], xAxisOpts,   yAxisOpts,    true);
+	const scales  = self.scales = {};
+	const bands   = self.bands  = opts.bands || [];
+
+	bands.forEach(b => {
+		b.fill = fnOrSelf(b.fill || null);
+	});
+
+	const xScaleKey = mode == 2 ? series[1].facets[0].scale : series[0].scale;
+
+	const drawOrderMap = {
+		axes: drawAxesGrid,
+		series: drawSeries,
+	};
+
+	const drawOrder = (opts.drawOrder || ["axes", "series"]).map(key => drawOrderMap[key]);
+
+	function initScale(scaleKey) {
+		let sc = scales[scaleKey];
+
+		if (sc == null) {
+			let scaleOpts = (opts.scales || EMPTY_OBJ)[scaleKey] || EMPTY_OBJ;
+
+			if (scaleOpts.from != null) {
+				// ensure parent is initialized
+				initScale(scaleOpts.from);
+				// dependent scales inherit
+				scales[scaleKey] = assign({}, scales[scaleOpts.from], scaleOpts, {key: scaleKey});
+			}
+			else {
+				sc = scales[scaleKey] = assign({}, (scaleKey == xScaleKey ? xScaleOpts : yScaleOpts), scaleOpts);
+
+				if (mode == 2)
+					sc.time = false;
+
+				sc.key = scaleKey;
+
+				let isTime = sc.time;
+
+				let rn = sc.range;
+
+				let rangeIsArr = isArr(rn);
+
+				if (scaleKey != xScaleKey || mode == 2) {
+					// if range array has null limits, it should be auto
+					if (rangeIsArr && (rn[0] == null || rn[1] == null)) {
+						rn = {
+							min: rn[0] == null ? autoRangePart : {
+								mode: 1,
+								hard: rn[0],
+								soft: rn[0],
+							},
+							max: rn[1] == null ? autoRangePart : {
+								mode: 1,
+								hard: rn[1],
+								soft: rn[1],
+							},
+						};
+						rangeIsArr = false;
+					}
+
+					if (!rangeIsArr && isObj(rn)) {
+						let cfg = rn;
+						// this is similar to snapNumY
+						rn = (self, dataMin, dataMax) => dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, cfg);
+					}
+				}
+
+				sc.range = fnOrSelf(rn || (isTime ? snapTimeX : scaleKey == xScaleKey ?
+					(sc.distr == 3 ? snapLogX : sc.distr == 4 ? snapAsinhX : snapNumX) :
+					(sc.distr == 3 ? snapLogY : sc.distr == 4 ? snapAsinhY : snapNumY)
+				));
+
+				sc.auto = fnOrSelf(rangeIsArr ? false : sc.auto);
+
+				sc.clamp = fnOrSelf(sc.clamp || clampScale);
+
+				// caches for expensive ops like asinh() & log()
+				sc._min = sc._max = null;
+			}
+		}
+	}
+
+	initScale("x");
+	initScale("y");
+
+	// TODO: init scales from facets in mode: 2
+	if (mode == 1) {
+		series.forEach(s => {
+			initScale(s.scale);
+		});
+	}
+
+	axes.forEach(a => {
+		initScale(a.scale);
+	});
+
+	for (let k in opts.scales)
+		initScale(k);
+
+	const scaleX = scales[xScaleKey];
+
+	const xScaleDistr = scaleX.distr;
+
+	let valToPosX, valToPosY;
+
+	if (scaleX.ori == 0) {
+		addClass(root, ORI_HZ);
+		valToPosX = getHPos;
+		valToPosY = getVPos;
+		/*
+		updOriDims = () => {
+			xDimCan = plotWid;
+			xOffCan = plotLft;
+			yDimCan = plotHgt;
+			yOffCan = plotTop;
+
+			xDimCss = plotWidCss;
+			xOffCss = plotLftCss;
+			yDimCss = plotHgtCss;
+			yOffCss = plotTopCss;
+		};
+		*/
+	}
+	else {
+		addClass(root, ORI_VT);
+		valToPosX = getVPos;
+		valToPosY = getHPos;
+		/*
+		updOriDims = () => {
+			xDimCan = plotHgt;
+			xOffCan = plotTop;
+			yDimCan = plotWid;
+			yOffCan = plotLft;
+
+			xDimCss = plotHgtCss;
+			xOffCss = plotTopCss;
+			yDimCss = plotWidCss;
+			yOffCss = plotLftCss;
+		};
+		*/
+	}
+
+	const pendScales = {};
+
+	// explicitly-set initial scales
+	for (let k in scales) {
+		let sc = scales[k];
+
+		if (sc.min != null || sc.max != null) {
+			pendScales[k] = {min: sc.min, max: sc.max};
+			sc.min = sc.max = null;
+		}
+	}
+
+//	self.tz = opts.tz || Intl.DateTimeFormat().resolvedOptions().timeZone;
+	const _tzDate  = (opts.tzDate || (ts => new Date(round(ts / ms))));
+	const _fmtDate = (opts.fmtDate || fmtDate);
+
+	const _timeAxisSplits = (ms == 1 ? timeAxisSplitsMs(_tzDate) : timeAxisSplitsS(_tzDate));
+	const _timeAxisVals   = timeAxisVals(_tzDate, timeAxisStamps((ms == 1 ? _timeAxisStampsMs : _timeAxisStampsS), _fmtDate));
+	const _timeSeriesVal  = timeSeriesVal(_tzDate, timeSeriesStamp(_timeSeriesStamp, _fmtDate));
+
+	const activeIdxs = [];
+
+	const legend     = (self.legend = assign({}, legendOpts, opts.legend));
+	const showLegend = legend.show;
+	const markers    = legend.markers;
+
+	{
+		legend.idxs = activeIdxs;
+
+		markers.width  = fnOrSelf(markers.width);
+		markers.dash   = fnOrSelf(markers.dash);
+		markers.stroke = fnOrSelf(markers.stroke);
+		markers.fill   = fnOrSelf(markers.fill);
+	}
+
+	let legendEl;
+	let legendRows = [];
+	let legendCells = [];
+	let legendCols;
+	let multiValLegend = false;
+	let NULL_LEGEND_VALUES = {};
+
+	if (legend.live) {
+		const getMultiVals = series[1] ? series[1].values : null;
+		multiValLegend = getMultiVals != null;
+		legendCols = multiValLegend ? getMultiVals(self, 1, 0) : {_: 0};
+
+		for (let k in legendCols)
+			NULL_LEGEND_VALUES[k] = "--";
+	}
+
+	if (showLegend) {
+		legendEl = placeTag("table", LEGEND, root);
+
+		if (multiValLegend) {
+			let head = placeTag("tr", LEGEND_THEAD, legendEl);
+			placeTag("th", null, head);
+
+			for (var key in legendCols)
+				placeTag("th", LEGEND_LABEL, head).textContent = key;
+		}
+		else {
+			addClass(legendEl, LEGEND_INLINE);
+			legend.live && addClass(legendEl, LEGEND_LIVE);
+		}
+	}
+
+	const son  = {show: true};
+	const soff = {show: false};
+
+	function initLegendRow(s, i) {
+		if (i == 0 && (multiValLegend || !legend.live || mode == 2))
+			return nullNullTuple;
+
+		let cells = [];
+
+		let row = placeTag("tr", LEGEND_SERIES, legendEl, legendEl.childNodes[i]);
+
+		addClass(row, s.class);
+
+		if (!s.show)
+			addClass(row, OFF);
+
+		let label = placeTag("th", null, row);
+
+		if (markers.show) {
+			let indic = placeDiv(LEGEND_MARKER, label);
+
+			if (i > 0) {
+				let width  = markers.width(self, i);
+
+				if (width)
+					indic.style.border = width + "px " + markers.dash(self, i) + " " + markers.stroke(self, i);
+
+				indic.style.background = markers.fill(self, i);
+			}
+		}
+
+		let text = placeDiv(LEGEND_LABEL, label);
+		text.textContent = s.label;
+
+		if (i > 0) {
+			if (!markers.show)
+				text.style.color = s.width > 0 ? markers.stroke(self, i) : markers.fill(self, i);
+
+			onMouse("click", label, e => {
+				if (cursor._lock)
+					return;
+
+				let seriesIdx = series.indexOf(s);
+
+				if ((e.ctrlKey || e.metaKey) != legend.isolate) {
+					// if any other series is shown, isolate this one. else show all
+					let isolate = series.some((s, i) => i > 0 && i != seriesIdx && s.show);
+
+					series.forEach((s, i) => {
+						i > 0 && setSeries(i, isolate ? (i == seriesIdx ? son : soff) : son, true, syncOpts.setSeries);
+					});
+				}
+				else
+					setSeries(seriesIdx, {show: !s.show}, true, syncOpts.setSeries);
+			});
+
+			if (cursorFocus) {
+				onMouse(mouseenter, label, e => {
+					if (cursor._lock)
+						return;
+
+					setSeries(series.indexOf(s), FOCUS_TRUE, true, syncOpts.setSeries);
+				});
+			}
+		}
+
+		for (var key in legendCols) {
+			let v = placeTag("td", LEGEND_VALUE, row);
+			v.textContent = "--";
+			cells.push(v);
+		}
+
+		return [row, cells];
+	}
+
+	const mouseListeners = new Map();
+
+	function onMouse(ev, targ, fn) {
+		const targListeners = mouseListeners.get(targ) || {};
+		const listener = cursor.bind[ev](self, targ, fn);
+
+		if (listener) {
+			on(ev, targ, targListeners[ev] = listener);
+			mouseListeners.set(targ, targListeners);
+		}
+	}
+
+	function offMouse(ev, targ, fn) {
+		const targListeners = mouseListeners.get(targ) || {};
+
+		for (let k in targListeners) {
+			if (ev == null || k == ev) {
+				off(k, targ, targListeners[k]);
+				delete targListeners[k];
+			}
+		}
+
+		if (ev == null)
+			mouseListeners.delete(targ);
+	}
+
+	let fullWidCss = 0;
+	let fullHgtCss = 0;
+
+	let plotWidCss = 0;
+	let plotHgtCss = 0;
+
+	// plot margins to account for axes
+	let plotLftCss = 0;
+	let plotTopCss = 0;
+
+	let plotLft = 0;
+	let plotTop = 0;
+	let plotWid = 0;
+	let plotHgt = 0;
+
+	self.bbox = {};
+
+	let shouldSetScales = false;
+	let shouldSetSize = false;
+	let shouldConvergeSize = false;
+	let shouldSetCursor = false;
+	let shouldSetLegend = false;
+
+	function _setSize(width, height, force) {
+		if (force || (width != self.width || height != self.height))
+			calcSize(width, height);
+
+		resetYSeries(false);
+
+		shouldConvergeSize = true;
+		shouldSetSize = true;
+		shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+		commit();
+	}
+
+	function calcSize(width, height) {
+	//	log("calcSize()", arguments);
+
+		self.width  = fullWidCss = plotWidCss = width;
+		self.height = fullHgtCss = plotHgtCss = height;
+		plotLftCss  = plotTopCss = 0;
+
+		calcPlotRect();
+		calcAxesRects();
+
+		let bb = self.bbox;
+
+		plotLft = bb.left   = incrRound(plotLftCss * pxRatio, 0.5);
+		plotTop = bb.top    = incrRound(plotTopCss * pxRatio, 0.5);
+		plotWid = bb.width  = incrRound(plotWidCss * pxRatio, 0.5);
+		plotHgt = bb.height = incrRound(plotHgtCss * pxRatio, 0.5);
+
+	//	updOriDims();
+	}
+
+	// ensures size calc convergence
+	const CYCLE_LIMIT = 3;
+
+	function convergeSize() {
+		let converged = false;
+
+		let cycleNum = 0;
+
+		while (!converged) {
+			cycleNum++;
+
+			let axesConverged = axesCalc(cycleNum);
+			let paddingConverged = paddingCalc(cycleNum);
+
+			converged = cycleNum == CYCLE_LIMIT || (axesConverged && paddingConverged);
+
+			if (!converged) {
+				calcSize(self.width, self.height);
+				shouldSetSize = true;
+			}
+		}
+	}
+
+	function setSize({width, height}) {
+		_setSize(width, height);
+	}
+
+	self.setSize = setSize;
+
+	// accumulate axis offsets, reduce canvas width
+	function calcPlotRect() {
+		// easements for edge labels
+		let hasTopAxis = false;
+		let hasBtmAxis = false;
+		let hasRgtAxis = false;
+		let hasLftAxis = false;
+
+		axes.forEach((axis, i) => {
+			if (axis.show && axis._show) {
+				let {side, _size} = axis;
+				let isVt = side % 2;
+				let labelSize = axis.label != null ? axis.labelSize : 0;
+
+				let fullSize = _size + labelSize;
+
+				if (fullSize > 0) {
+					if (isVt) {
+						plotWidCss -= fullSize;
+
+						if (side == 3) {
+							plotLftCss += fullSize;
+							hasLftAxis = true;
+						}
+						else
+							hasRgtAxis = true;
+					}
+					else {
+						plotHgtCss -= fullSize;
+
+						if (side == 0) {
+							plotTopCss += fullSize;
+							hasTopAxis = true;
+						}
+						else
+							hasBtmAxis = true;
+					}
+				}
+			}
+		});
+
+		sidesWithAxes[0] = hasTopAxis;
+		sidesWithAxes[1] = hasRgtAxis;
+		sidesWithAxes[2] = hasBtmAxis;
+		sidesWithAxes[3] = hasLftAxis;
+
+		// hz padding
+		plotWidCss -= _padding[1] + _padding[3];
+		plotLftCss += _padding[3];
+
+		// vt padding
+		plotHgtCss -= _padding[2] + _padding[0];
+		plotTopCss += _padding[0];
+	}
+
+	function calcAxesRects() {
+		// will accum +
+		let off1 = plotLftCss + plotWidCss;
+		let off2 = plotTopCss + plotHgtCss;
+		// will accum -
+		let off3 = plotLftCss;
+		let off0 = plotTopCss;
+
+		function incrOffset(side, size) {
+			switch (side) {
+				case 1: off1 += size; return off1 - size;
+				case 2: off2 += size; return off2 - size;
+				case 3: off3 -= size; return off3 + size;
+				case 0: off0 -= size; return off0 + size;
+			}
+		}
+
+		axes.forEach((axis, i) => {
+			if (axis.show && axis._show) {
+				let side = axis.side;
+
+				axis._pos = incrOffset(side, axis._size);
+
+				if (axis.label != null)
+					axis._lpos = incrOffset(side, axis.labelSize);
+			}
+		});
+	}
+
+	const cursor = (self.cursor = assign({}, cursorOpts, {drag: {y: mode == 2}}, opts.cursor));
+
+	{
+		cursor.idxs = activeIdxs;
+
+		cursor._lock = false;
+
+		let points = cursor.points;
+
+		points.show   = fnOrSelf(points.show);
+		points.size   = fnOrSelf(points.size);
+		points.stroke = fnOrSelf(points.stroke);
+		points.width  = fnOrSelf(points.width);
+		points.fill   = fnOrSelf(points.fill);
+	}
+
+	const focus = self.focus = assign({}, opts.focus || {alpha: 0.3}, cursor.focus);
+	const cursorFocus = focus.prox >= 0;
+
+	// series-intersection markers
+	let cursorPts = [null];
+
+	function initCursorPt(s, si) {
+		if (si > 0) {
+			let pt = cursor.points.show(self, si);
+
+			if (pt) {
+				addClass(pt, CURSOR_PT);
+				addClass(pt, s.class);
+				elTrans(pt, -10, -10, plotWidCss, plotHgtCss);
+				over.insertBefore(pt, cursorPts[si]);
+
+				return pt;
+			}
+		}
+	}
+
+	function initSeries(s, i) {
+		if (mode == 1 || i > 0) {
+			let isTime = mode == 1 && scales[s.scale].time;
+
+			let sv = s.value;
+			s.value = isTime ? (isStr(sv) ? timeSeriesVal(_tzDate, timeSeriesStamp(sv, _fmtDate)) : sv || _timeSeriesVal) : sv || numSeriesVal;
+			s.label = s.label || (isTime ? timeSeriesLabel : numSeriesLabel);
+		}
+
+		if (i > 0) {
+			s.width  = s.width == null ? 1 : s.width;
+			s.paths  = s.paths || linearPath || retNull;
+			s.fillTo = fnOrSelf(s.fillTo || seriesFillTo);
+			s.pxAlign = +ifNull(s.pxAlign, pxAlign);
+			s.pxRound = pxRoundGen(s.pxAlign);
+
+			s.stroke = fnOrSelf(s.stroke || null);
+			s.fill   = fnOrSelf(s.fill || null);
+			s._stroke = s._fill = s._paths = s._focus = null;
+
+			let _ptDia = ptDia(s.width, 1);
+			let points = s.points = assign({}, {
+				size: _ptDia,
+				width: max(1, _ptDia * .2),
+				stroke: s.stroke,
+				space: _ptDia * 2,
+				paths: pointsPath,
+				_stroke: null,
+				_fill: null,
+			}, s.points);
+			points.show   = fnOrSelf(points.show);
+			points.filter = fnOrSelf(points.filter);
+			points.fill   = fnOrSelf(points.fill);
+			points.stroke = fnOrSelf(points.stroke);
+			points.paths  = fnOrSelf(points.paths);
+			points.pxAlign = s.pxAlign;
+		}
+
+		if (showLegend) {
+			let rowCells = initLegendRow(s, i);
+			legendRows.splice(i, 0, rowCells[0]);
+			legendCells.splice(i, 0, rowCells[1]);
+			legend.values.push(null);	// NULL_LEGEND_VALS not yet avil here :(
+		}
+
+		if (cursor.show) {
+			activeIdxs.splice(i, 0, null);
+
+			let pt = initCursorPt(s, i);
+			pt && cursorPts.splice(i, 0, pt);
+		}
+	}
+
+	function addSeries(opts, si) {
+		si = si == null ? series.length : si;
+
+		opts = setDefault(opts, si, xSeriesOpts, ySeriesOpts);
+		series.splice(si, 0, opts);
+		initSeries(series[si], si);
+	}
+
+	self.addSeries = addSeries;
+
+	function delSeries(i) {
+		series.splice(i, 1);
+
+		if (showLegend) {
+			legend.values.splice(i, 1);
+
+			legendCells.splice(i, 1);
+			let tr = legendRows.splice(i, 1)[0];
+			offMouse(null, tr.firstChild);
+			tr.remove();
+		}
+
+		if (cursor.show) {
+			activeIdxs.splice(i, 1);
+
+			cursorPts.length > 1 && cursorPts.splice(i, 1)[0].remove();
+		}
+
+		// TODO: de-init no-longer-needed scales?
+	}
+
+	self.delSeries = delSeries;
+
+	const sidesWithAxes = [false, false, false, false];
+
+	function initAxis(axis, i) {
+		axis._show = axis.show;
+
+		if (axis.show) {
+			let isVt = axis.side % 2;
+
+			let sc = scales[axis.scale];
+
+			// this can occur if all series specify non-default scales
+			if (sc == null) {
+				axis.scale = isVt ? series[1].scale : xScaleKey;
+				sc = scales[axis.scale];
+			}
+
+			// also set defaults for incrs & values based on axis distr
+			let isTime = sc.time;
+
+			axis.size   = fnOrSelf(axis.size);
+			axis.space  = fnOrSelf(axis.space);
+			axis.rotate = fnOrSelf(axis.rotate);
+			axis.incrs  = fnOrSelf(axis.incrs  || (          sc.distr == 2 ? wholeIncrs : (isTime ? (ms == 1 ? timeIncrsMs : timeIncrsS) : numIncrs)));
+			axis.splits = fnOrSelf(axis.splits || (isTime && sc.distr == 1 ? _timeAxisSplits : sc.distr == 3 ? logAxisSplits : sc.distr == 4 ? asinhAxisSplits : numAxisSplits));
+
+			axis.stroke       = fnOrSelf(axis.stroke);
+			axis.grid.stroke  = fnOrSelf(axis.grid.stroke);
+			axis.ticks.stroke = fnOrSelf(axis.ticks.stroke);
+
+			let av = axis.values;
+
+			axis.values = (
+				// static array of tick values
+				isArr(av) && !isArr(av[0]) ? fnOrSelf(av) :
+				// temporal
+				isTime ? (
+					// config array of fmtDate string tpls
+					isArr(av) ?
+						timeAxisVals(_tzDate, timeAxisStamps(av, _fmtDate)) :
+					// fmtDate string tpl
+					isStr(av) ?
+						timeAxisVal(_tzDate, av) :
+					av || _timeAxisVals
+				) : av || numAxisVals
+			);
+
+			axis.filter = fnOrSelf(axis.filter || (          sc.distr >= 3 ? logAxisValsFilt : retArg1));
+
+			axis.font      = pxRatioFont(axis.font);
+			axis.labelFont = pxRatioFont(axis.labelFont);
+
+			axis._size   = axis.size(self, null, i, 0);
+
+			axis._space  =
+			axis._rotate =
+			axis._incrs  =
+			axis._found  =	// foundIncrSpace
+			axis._splits =
+			axis._values = null;
+
+			if (axis._size > 0)
+				sidesWithAxes[i] = true;
+
+			axis._el = placeDiv(AXIS, wrap);
+
+			// debug
+		//	axis._el.style.background = "#"  + Math.floor(Math.random()*16777215).toString(16) + '80';
+		}
+	}
+
+	function autoPadSide(self, side, sidesWithAxes, cycleNum) {
+		let [hasTopAxis, hasRgtAxis, hasBtmAxis, hasLftAxis] = sidesWithAxes;
+
+		let ori = side % 2;
+		let size = 0;
+
+		if (ori == 0 && (hasLftAxis || hasRgtAxis))
+			size = (side == 0 && !hasTopAxis || side == 2 && !hasBtmAxis ? round(xAxisOpts.size / 3) : 0);
+		if (ori == 1 && (hasTopAxis || hasBtmAxis))
+			size = (side == 1 && !hasRgtAxis || side == 3 && !hasLftAxis ? round(yAxisOpts.size / 2) : 0);
+
+		return size;
+	}
+
+	const padding = self.padding = (opts.padding || [autoPadSide,autoPadSide,autoPadSide,autoPadSide]).map(p => fnOrSelf(ifNull(p, autoPadSide)));
+	const _padding = self._padding = padding.map((p, i) => p(self, i, sidesWithAxes, 0));
+
+	let dataLen;
+
+	// rendered data window
+	let i0 = null;
+	let i1 = null;
+	const idxs = mode == 1 ? series[0].idxs : null;
+
+	let data0 = null;
+
+	let viaAutoScaleX = false;
+
+	function setData(_data, _resetScales) {
+		if (mode == 2) {
+			dataLen = 0;
+			for (let i = 1; i < series.length; i++)
+				dataLen += data[i][0].length;
+			self.data = data = _data;
+		}
+		else {
+			data = (_data || []).slice();
+			data[0] = data[0] || [];
+
+			self.data = data.slice();
+			data0 = data[0];
+			dataLen = data0.length;
+
+			if (xScaleDistr == 2)
+				data[0] = data0.map((v, i) => i);
+		}
+
+		self._data = data;
+
+		resetYSeries(true);
+
+		fire("setData");
+
+		if (_resetScales !== false) {
+			let xsc = scaleX;
+
+			if (xsc.auto(self, viaAutoScaleX))
+				autoScaleX();
+			else
+				_setScale(xScaleKey, xsc.min, xsc.max);
+
+			shouldSetCursor = cursor.left >= 0;
+			shouldSetLegend = true;
+			commit();
+		}
+	}
+
+	self.setData = setData;
+
+	function autoScaleX() {
+		viaAutoScaleX = true;
+
+		let _min, _max;
+
+		if (mode == 1) {
+			if (dataLen > 0) {
+				i0 = idxs[0] = 0;
+				i1 = idxs[1] = dataLen - 1;
+
+				_min = data[0][i0];
+				_max = data[0][i1];
+
+				if (xScaleDistr == 2) {
+					_min = i0;
+					_max = i1;
+				}
+				else if (dataLen == 1) {
+					if (xScaleDistr == 3)
+						[_min, _max] = rangeLog(_min, _min, scaleX.log, false);
+					else if (xScaleDistr == 4)
+						[_min, _max] = rangeAsinh(_min, _min, scaleX.log, false);
+					else if (scaleX.time)
+						_max = _min + round(86400 / ms);
+					else
+						[_min, _max] = rangeNum(_min, _max, rangePad, true);
+				}
+			}
+			else {
+				i0 = idxs[0] = _min = null;
+				i1 = idxs[1] = _max = null;
+			}
+		}
+
+		_setScale(xScaleKey, _min, _max);
+	}
+
+	let ctxStroke, ctxFill, ctxWidth, ctxDash, ctxJoin, ctxCap, ctxFont, ctxAlign, ctxBaseline;
+	let ctxAlpha;
+
+	function setCtxStyle(stroke = transparent, width, dash = EMPTY_ARR, cap = "butt", fill = transparent, join = "round") {
+		if (stroke != ctxStroke)
+			ctx.strokeStyle = ctxStroke = stroke;
+		if (fill != ctxFill)
+			ctx.fillStyle = ctxFill = fill;
+		if (width != ctxWidth)
+			ctx.lineWidth = ctxWidth = width;
+		if (join != ctxJoin)
+			ctx.lineJoin = ctxJoin = join;
+		if (cap != ctxCap)
+			ctx.lineCap = ctxCap = cap; // (‿|‿)
+		if (dash != ctxDash)
+			ctx.setLineDash(ctxDash = dash);
+	}
+
+	function setFontStyle(font, fill, align, baseline) {
+		if (fill != ctxFill)
+			ctx.fillStyle = ctxFill = fill;
+		if (font != ctxFont)
+			ctx.font = ctxFont = font;
+		if (align != ctxAlign)
+			ctx.textAlign = ctxAlign = align;
+		if (baseline != ctxBaseline)
+			ctx.textBaseline = ctxBaseline = baseline;
+	}
+
+	function accScale(wsc, psc, facet, data) {
+		if (wsc.auto(self, viaAutoScaleX) && (psc == null || psc.min == null)) {
+			let _i0 = ifNull(i0, 0);
+			let _i1 = ifNull(i1, data.length - 1);
+
+			// only run getMinMax() for invalidated series data, else reuse
+			let minMax = facet.min == null ? (wsc.distr == 3 ? getMinMaxLog(data, _i0, _i1) : getMinMax(data, _i0, _i1)) : [facet.min, facet.max];
+
+			// initial min/max
+			wsc.min = min(wsc.min, facet.min = minMax[0]);
+			wsc.max = max(wsc.max, facet.max = minMax[1]);
+		}
+	}
+
+	function setScales() {
+	//	log("setScales()", arguments);
+
+		// wip scales
+		let wipScales = copy(scales, fastIsObj);
+
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+			let psc = pendScales[k];
+
+			if (psc != null && psc.min != null) {
+				assign(wsc, psc);
+
+				// explicitly setting the x-scale invalidates everything (acts as redraw)
+				if (k == xScaleKey)
+					resetYSeries(true);
+			}
+			else if (k != xScaleKey || mode == 2) {
+				if (dataLen == 0 && wsc.from == null) {
+					let minMax = wsc.range(self, null, null, k);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+				else {
+					wsc.min = inf;
+					wsc.max = -inf;
+				}
+			}
+		}
+
+		if (dataLen > 0) {
+			// pre-range y-scales from y series' data values
+			series.forEach((s, i) => {
+				if (mode == 1) {
+					let k = s.scale;
+					let wsc = wipScales[k];
+					let psc = pendScales[k];
+
+					if (i == 0) {
+						let minMax = wsc.range(self, wsc.min, wsc.max, k);
+
+						wsc.min = minMax[0];
+						wsc.max = minMax[1];
+
+						i0 = closestIdx(wsc.min, data[0]);
+						i1 = closestIdx(wsc.max, data[0]);
+
+						// closest indices can be outside of view
+						if (data[0][i0] < wsc.min)
+							i0++;
+						if (data[0][i1] > wsc.max)
+							i1--;
+
+						s.min = data0[i0];
+						s.max = data0[i1];
+					}
+					else if (s.show && s.auto)
+						accScale(wsc, psc, s, data[i]);
+
+					s.idxs[0] = i0;
+					s.idxs[1] = i1;
+				}
+				else {
+					if (i > 0) {
+						if (s.show && s.auto) {
+							// TODO: only handles, assumes and requires facets[0] / 'x' scale, and facets[1] / 'y' scale
+							let [ xFacet, yFacet ] = s.facets;
+							let xScaleKey = xFacet.scale;
+							let yScaleKey = yFacet.scale;
+							let [ xData, yData ] = data[i];
+
+							accScale(wipScales[xScaleKey], pendScales[xScaleKey], xFacet, xData);
+							accScale(wipScales[yScaleKey], pendScales[yScaleKey], yFacet, yData);
+
+							// temp
+							s.min = yFacet.min;
+							s.max = yFacet.max;
+						}
+					}
+				}
+			});
+
+			// range independent scales
+			for (let k in wipScales) {
+				let wsc = wipScales[k];
+				let psc = pendScales[k];
+
+				if (wsc.from == null && (psc == null || psc.min == null)) {
+					let minMax = wsc.range(
+						self,
+						wsc.min ==  inf ? null : wsc.min,
+						wsc.max == -inf ? null : wsc.max,
+						k
+					);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+			}
+		}
+
+		// range dependent scales
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+
+			if (wsc.from != null) {
+				let base = wipScales[wsc.from];
+
+				if (base.min == null)
+					wsc.min = wsc.max = null;
+				else {
+					let minMax = wsc.range(self, base.min, base.max, k);
+					wsc.min = minMax[0];
+					wsc.max = minMax[1];
+				}
+			}
+		}
+
+		let changed = {};
+		let anyChanged = false;
+
+		for (let k in wipScales) {
+			let wsc = wipScales[k];
+			let sc = scales[k];
+
+			if (sc.min != wsc.min || sc.max != wsc.max) {
+				sc.min = wsc.min;
+				sc.max = wsc.max;
+
+				let distr = sc.distr;
+
+				sc._min = distr == 3 ? log10(sc.min) : distr == 4 ? asinh(sc.min, sc.asinh) : sc.min;
+				sc._max = distr == 3 ? log10(sc.max) : distr == 4 ? asinh(sc.max, sc.asinh) : sc.max;
+
+				changed[k] = anyChanged = true;
+			}
+		}
+
+		if (anyChanged) {
+			// invalidate paths of all series on changed scales
+			series.forEach((s, i) => {
+				if (mode == 2) {
+					if (i > 0 && changed.y)
+						s._paths = null;
+				}
+				else {
+					if (changed[s.scale])
+						s._paths = null;
+				}
+			});
+
+			for (let k in changed) {
+				shouldConvergeSize = true;
+				fire("setScale", k);
+			}
+
+			if (cursor.show)
+				shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+		}
+
+		for (let k in pendScales)
+			pendScales[k] = null;
+	}
+
+	// grabs the nearest indices with y data outside of x-scale limits
+	function getOuterIdxs(ydata) {
+		let _i0 = clamp(i0 - 1, 0, dataLen - 1);
+		let _i1 = clamp(i1 + 1, 0, dataLen - 1);
+
+		while (ydata[_i0] == null && _i0 > 0)
+			_i0--;
+
+		while (ydata[_i1] == null && _i1 < dataLen - 1)
+			_i1++;
+
+		return [_i0, _i1];
+	}
+
+	function drawSeries() {
+		if (dataLen > 0) {
+			series.forEach((s, i) => {
+				if (i > 0 && s.show && s._paths == null) {
+					let _idxs = getOuterIdxs(data[i]);
+					s._paths = s.paths(self, i, _idxs[0], _idxs[1]);
+				}
+			});
+
+			series.forEach((s, i) => {
+				if (i > 0 && s.show) {
+					if (ctxAlpha != s.alpha)
+						ctx.globalAlpha = ctxAlpha = s.alpha;
+
+					{
+						cacheStrokeFill(i, false);
+						s._paths && drawPath(i, false);
+					}
+
+					{
+						cacheStrokeFill(i, true);
+
+						let show = s.points.show(self, i, i0, i1);
+						let idxs = s.points.filter(self, i, show, s._paths ? s._paths.gaps : null);
+
+						if (show || idxs) {
+							s.points._paths = s.points.paths(self, i, i0, i1, idxs);
+							drawPath(i, true);
+						}
+					}
+
+					if (ctxAlpha != 1)
+						ctx.globalAlpha = ctxAlpha = 1;
+
+					fire("drawSeries", i);
+				}
+			});
+		}
+	}
+
+	function cacheStrokeFill(si, _points) {
+		let s = _points ? series[si].points : series[si];
+
+		s._stroke = s.stroke(self, si);
+		s._fill   = s.fill(self, si);
+	}
+
+	function drawPath(si, _points) {
+		let s = _points ? series[si].points : series[si];
+
+		let strokeStyle = s._stroke;
+		let fillStyle   = s._fill;
+
+		let { stroke, fill, clip: gapsClip, flags } = s._paths;
+		let boundsClip = null;
+		let width = roundDec(s.width * pxRatio, 3);
+		let offset = (width % 2) / 2;
+
+		if (_points && fillStyle == null)
+			fillStyle = width > 0 ? "#fff" : strokeStyle;
+
+		let _pxAlign = s.pxAlign == 1;
+
+		_pxAlign && ctx.translate(offset, offset);
+
+		if (!_points) {
+			let lft = plotLft,
+				top = plotTop,
+				wid = plotWid,
+				hgt = plotHgt;
+
+			let halfWid = width * pxRatio / 2;
+
+			if (s.min == 0)
+				hgt += halfWid;
+
+			if (s.max == 0) {
+				top -= halfWid;
+				hgt += halfWid;
+			}
+
+			boundsClip = new Path2D();
+			boundsClip.rect(lft, top, wid, hgt);
+		}
+
+		// the points pathbuilder's gapsClip is its boundsClip, since points dont need gaps clipping, and bounds depend on point size
+		if (_points)
+			strokeFill(strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, gapsClip);
+		else
+			fillStroke(si, strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, boundsClip, gapsClip);
+
+		_pxAlign && ctx.translate(-offset, -offset);
+	}
+
+	function fillStroke(si, strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip) {
+		let didStrokeFill = false;
+
+		// for all bands where this series is the top edge, create upwards clips using the bottom edges
+		// and apply clips + fill with band fill or dfltFill
+		bands.forEach((b, bi) => {
+			// isUpperEdge?
+			if (b.series[0] == si) {
+				let lowerEdge = series[b.series[1]];
+				let lowerData = data[b.series[1]];
+
+				let bandClip = (lowerEdge._paths || EMPTY_OBJ).band;
+				let gapsClip2;
+
+				let _fillStyle = null;
+
+				// hasLowerEdge?
+				if (lowerEdge.show && bandClip && hasData(lowerData, i0, i1)) {
+					_fillStyle = b.fill(self, bi) || fillStyle;
+					gapsClip2 = lowerEdge._paths.clip;
+				}
+				else
+					bandClip = null;
+
+				strokeFill(strokeStyle, lineWidth, lineDash, lineCap, _fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip);
+
+				didStrokeFill = true;
+			}
+		});
+
+		if (!didStrokeFill)
+			strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip);
+	}
+
+	const CLIP_FILL_STROKE = BAND_CLIP_FILL | BAND_CLIP_STROKE;
+
+	function strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip) {
+		setCtxStyle(strokeStyle, lineWidth, lineDash, lineCap, fillStyle);
+
+		if (boundsClip || gapsClip || bandClip) {
+			ctx.save();
+			boundsClip && ctx.clip(boundsClip);
+			gapsClip && ctx.clip(gapsClip);
+		}
+
+		if (bandClip) {
+			if ((flags & CLIP_FILL_STROKE) == CLIP_FILL_STROKE) {
+				ctx.clip(bandClip);
+				gapsClip2 && ctx.clip(gapsClip2);
+				doFill(fillStyle, fillPath);
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+			else if (flags & BAND_CLIP_STROKE) {
+				doFill(fillStyle, fillPath);
+				ctx.clip(bandClip);
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+			else if (flags & BAND_CLIP_FILL) {
+				ctx.save();
+				ctx.clip(bandClip);
+				gapsClip2 && ctx.clip(gapsClip2);
+				doFill(fillStyle, fillPath);
+				ctx.restore();
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+		}
+		else {
+			doFill(fillStyle, fillPath);
+			doStroke(strokeStyle, strokePath, lineWidth);
+		}
+
+		if (boundsClip || gapsClip || bandClip)
+			ctx.restore();
+	}
+
+	function doStroke(strokeStyle, strokePath, lineWidth) {
+		if (lineWidth > 0) {
+			if (strokePath instanceof Map) {
+				strokePath.forEach((strokePath, strokeStyle) => {
+					ctx.strokeStyle = ctxStroke = strokeStyle;
+					ctx.stroke(strokePath);
+				});
+			}
+			else
+				strokePath != null && strokeStyle && ctx.stroke(strokePath);
+		}
+	}
+
+	function doFill(fillStyle, fillPath) {
+		if (fillPath instanceof Map) {
+			fillPath.forEach((fillPath, fillStyle) => {
+				ctx.fillStyle = ctxFill = fillStyle;
+				ctx.fill(fillPath);
+			});
+		}
+		else
+			fillPath != null && fillStyle && ctx.fill(fillPath);
+	}
+
+	function getIncrSpace(axisIdx, min, max, fullDim) {
+		let axis = axes[axisIdx];
+
+		let incrSpace;
+
+		if (fullDim <= 0)
+			incrSpace = [0, 0];
+		else {
+			let minSpace = axis._space = axis.space(self, axisIdx, min, max, fullDim);
+			let incrs    = axis._incrs = axis.incrs(self, axisIdx, min, max, fullDim, minSpace);
+			incrSpace    = findIncr(min, max, incrs, fullDim, minSpace);
+		}
+
+		return (axis._found = incrSpace);
+	}
+
+	function drawOrthoLines(offs, filts, ori, side, pos0, len, width, stroke, dash, cap) {
+		let offset = (width % 2) / 2;
+
+		pxAlign == 1 && ctx.translate(offset, offset);
+
+		setCtxStyle(stroke, width, dash, cap, stroke);
+
+		ctx.beginPath();
+
+		let x0, y0, x1, y1, pos1 = pos0 + (side == 0 || side == 3 ? -len : len);
+
+		if (ori == 0) {
+			y0 = pos0;
+			y1 = pos1;
+		}
+		else {
+			x0 = pos0;
+			x1 = pos1;
+		}
+
+		for (let i = 0; i < offs.length; i++) {
+			if (filts[i] != null) {
+				if (ori == 0)
+					x0 = x1 = offs[i];
+				else
+					y0 = y1 = offs[i];
+
+				ctx.moveTo(x0, y0);
+				ctx.lineTo(x1, y1);
+			}
+		}
+
+		ctx.stroke();
+
+		pxAlign == 1 && ctx.translate(-offset, -offset);
+	}
+
+	function axesCalc(cycleNum) {
+	//	log("axesCalc()", arguments);
+
+		let converged = true;
+
+		axes.forEach((axis, i) => {
+			if (!axis.show)
+				return;
+
+			let scale = scales[axis.scale];
+
+			if (scale.min == null) {
+				if (axis._show) {
+					converged = false;
+					axis._show = false;
+					resetYSeries(false);
+				}
+				return;
+			}
+			else {
+				if (!axis._show) {
+					converged = false;
+					axis._show = true;
+					resetYSeries(false);
+				}
+			}
+
+			let side = axis.side;
+			let ori = side % 2;
+
+			let {min, max} = scale;		// 		// should this toggle them ._show = false
+
+			let [_incr, _space] = getIncrSpace(i, min, max, ori == 0 ? plotWidCss : plotHgtCss);
+
+			if (_space == 0)
+				return;
+
+			// if we're using index positions, force first tick to match passed index
+			let forceMin = scale.distr == 2;
+
+			let _splits = axis._splits = axis.splits(self, i, min, max, _incr, _space, forceMin);
+
+			// tick labels
+			// BOO this assumes a specific data/series
+			let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+			let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+			let values = axis._values = axis.values(self, axis.filter(self, splits, i, _space, incr), i, _space, incr);
+
+			// rotating of labels only supported on bottom x axis
+			axis._rotate = side == 2 ? axis.rotate(self, values, i, _space) : 0;
+
+			let oldSize = axis._size;
+
+			axis._size = ceil(axis.size(self, values, i, cycleNum));
+
+			if (oldSize != null && axis._size != oldSize)			// ready && ?
+				converged = false;
+		});
+
+		return converged;
+	}
+
+	function paddingCalc(cycleNum) {
+		let converged = true;
+
+		padding.forEach((p, i) => {
+			let _p = p(self, i, sidesWithAxes, cycleNum);
+
+			if (_p != _padding[i])
+				converged = false;
+
+			_padding[i] = _p;
+		});
+
+		return converged;
+	}
+
+	function drawAxesGrid() {
+		for (let i = 0; i < axes.length; i++) {
+			let axis = axes[i];
+
+			if (!axis.show || !axis._show)
+				continue;
+
+			let side = axis.side;
+			let ori = side % 2;
+
+			let x, y;
+
+			let fillStyle = axis.stroke(self, i);
+
+			let shiftDir = side == 0 || side == 3 ? -1 : 1;
+
+			// axis label
+			if (axis.label) {
+				let shiftAmt = axis.labelGap * shiftDir;
+				let baseLpos = round((axis._lpos + shiftAmt) * pxRatio);
+
+				setFontStyle(axis.labelFont[0], fillStyle, "center", side == 2 ? TOP : BOTTOM);
+
+				ctx.save();
+
+				if (ori == 1) {
+					x = y = 0;
+
+					ctx.translate(
+						baseLpos,
+						round(plotTop + plotHgt / 2),
+					);
+					ctx.rotate((side == 3 ? -PI : PI) / 2);
+
+				}
+				else {
+					x = round(plotLft + plotWid / 2);
+					y = baseLpos;
+				}
+
+				ctx.fillText(axis.label, x, y);
+
+				ctx.restore();
+			}
+
+			let [_incr, _space] = axis._found;
+
+			if (_space == 0)
+				continue;
+
+			let scale = scales[axis.scale];
+
+			let plotDim = ori == 0 ? plotWid : plotHgt;
+			let plotOff = ori == 0 ? plotLft : plotTop;
+
+			let axisGap = round(axis.gap * pxRatio);
+
+			let _splits = axis._splits;
+
+			// tick labels
+			// BOO this assumes a specific data/series
+			let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+			let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+			let ticks = axis.ticks;
+			let tickSize = ticks.show ? round(ticks.size * pxRatio) : 0;
+
+			// rotating of labels only supported on bottom x axis
+			let angle = axis._rotate * -PI/180;
+
+			let basePos  = pxRound(axis._pos * pxRatio);
+			let shiftAmt = (tickSize + axisGap) * shiftDir;
+			let finalPos = basePos + shiftAmt;
+			    y        = ori == 0 ? finalPos : 0;
+			    x        = ori == 1 ? finalPos : 0;
+
+			let font         = axis.font[0];
+			let textAlign    = axis.align == 1 ? LEFT :
+			                   axis.align == 2 ? RIGHT :
+			                   angle > 0 ? LEFT :
+			                   angle < 0 ? RIGHT :
+			                   ori == 0 ? "center" : side == 3 ? RIGHT : LEFT;
+			let textBaseline = angle ||
+			                   ori == 1 ? "middle" : side == 2 ? TOP   : BOTTOM;
+
+			setFontStyle(font, fillStyle, textAlign, textBaseline);
+
+			let lineHeight = axis.font[1] * lineMult;
+
+			let canOffs = _splits.map(val => pxRound(getPos(val, scale, plotDim, plotOff)));
+
+			let _values = axis._values;
+
+			for (let i = 0; i < _values.length; i++) {
+				let val = _values[i];
+
+				if (val != null) {
+					if (ori == 0)
+						x = canOffs[i];
+					else
+						y = canOffs[i];
+
+					val = "" + val;
+
+					let _parts = val.indexOf("\n") == -1 ? [val] : val.split(/\n/gm);
+
+					for (let j = 0; j < _parts.length; j++) {
+						let text = _parts[j];
+
+						if (angle) {
+							ctx.save();
+							ctx.translate(x, y + j * lineHeight); // can this be replaced with position math?
+							ctx.rotate(angle); // can this be done once?
+							ctx.fillText(text, 0, 0);
+							ctx.restore();
+						}
+						else
+							ctx.fillText(text, x, y + j * lineHeight);
+					}
+				}
+			}
+
+			// ticks
+			if (ticks.show) {
+				drawOrthoLines(
+					canOffs,
+					ticks.filter(self, splits, i, _space, incr),
+					ori,
+					side,
+					basePos,
+					tickSize,
+					roundDec(ticks.width * pxRatio, 3),
+					ticks.stroke(self, i),
+					ticks.dash,
+					ticks.cap,
+				);
+			}
+
+			// grid
+			let grid = axis.grid;
+
+			if (grid.show) {
+				drawOrthoLines(
+					canOffs,
+					grid.filter(self, splits, i, _space, incr),
+					ori,
+					ori == 0 ? 2 : 1,
+					ori == 0 ? plotTop : plotLft,
+					ori == 0 ? plotHgt : plotWid,
+					roundDec(grid.width * pxRatio, 3),
+					grid.stroke(self, i),
+					grid.dash,
+					grid.cap,
+				);
+			}
+		}
+
+		fire("drawAxes");
+	}
+
+	function resetYSeries(minMax) {
+	//	log("resetYSeries()", arguments);
+
+		series.forEach((s, i) => {
+			if (i > 0) {
+				s._paths = null;
+
+				if (minMax) {
+					if (mode == 1) {
+						s.min = null;
+						s.max = null;
+					}
+					else {
+						s.facets.forEach(f => {
+							f.min = null;
+							f.max = null;
+						});
+					}
+				}
+			}
+		});
+	}
+
+	let queuedCommit = false;
+
+	function commit() {
+		if (!queuedCommit) {
+			microTask(_commit);
+			queuedCommit = true;
+		}
+	}
+
+	function _commit() {
+	//	log("_commit()", arguments);
+
+		if (shouldSetScales) {
+			setScales();
+			shouldSetScales = false;
+		}
+
+		if (shouldConvergeSize) {
+			convergeSize();
+			shouldConvergeSize = false;
+		}
+
+		if (shouldSetSize) {
+			setStylePx(under, LEFT,   plotLftCss);
+			setStylePx(under, TOP,    plotTopCss);
+			setStylePx(under, WIDTH,  plotWidCss);
+			setStylePx(under, HEIGHT, plotHgtCss);
+
+			setStylePx(over, LEFT,    plotLftCss);
+			setStylePx(over, TOP,     plotTopCss);
+			setStylePx(over, WIDTH,   plotWidCss);
+			setStylePx(over, HEIGHT,  plotHgtCss);
+
+			setStylePx(wrap, WIDTH,   fullWidCss);
+			setStylePx(wrap, HEIGHT,  fullHgtCss);
+
+			// NOTE: mutating this during print preview in Chrome forces transparent
+			// canvas pixels to white, even when followed up with clearRect() below
+			can.width  = round(fullWidCss * pxRatio);
+			can.height = round(fullHgtCss * pxRatio);
+
+
+			axes.forEach(a => {
+				let { _show, _el, _size, _pos, side } = a;
+
+				if (_show) {
+					let posOffset = (side === 3 || side === 0 ? _size : 0);
+					let isVt = side % 2 == 1;
+
+					setStylePx(_el, isVt ? "left"   : "top",    _pos - posOffset);
+					setStylePx(_el, isVt ? "width"  : "height", _size);
+					setStylePx(_el, isVt ? "top"    : "left",   isVt ? plotTopCss : plotLftCss);
+					setStylePx(_el, isVt ? "height" : "width",  isVt ? plotHgtCss : plotWidCss);
+
+					_el && remClass(_el, OFF);
+				}
+				else
+					_el && addClass(_el, OFF);
+			});
+
+			// invalidate ctx style cache
+			ctxStroke = ctxFill = ctxWidth = ctxJoin = ctxCap = ctxFont = ctxAlign = ctxBaseline = ctxDash = null;
+			ctxAlpha = 1;
+
+			syncRect(false);
+
+			fire("setSize");
+
+			shouldSetSize = false;
+		}
+
+		if (fullWidCss > 0 && fullHgtCss > 0) {
+			ctx.clearRect(0, 0, can.width, can.height);
+			fire("drawClear");
+			drawOrder.forEach(fn => fn());
+			fire("draw");
+		}
+
+	//	if (shouldSetSelect) {
+		// TODO: update .u-select metrics (if visible)
+		//	setStylePx(selectDiv, TOP, select.top = 0);
+		//	setStylePx(selectDiv, LEFT, select.left = 0);
+		//	setStylePx(selectDiv, WIDTH, select.width = 0);
+		//	setStylePx(selectDiv, HEIGHT, select.height = 0);
+		//	shouldSetSelect = false;
+	//	}
+
+		if (cursor.show && shouldSetCursor) {
+			updateCursor(null, true, false);
+			shouldSetCursor = false;
+		}
+
+	//	if (FEAT_LEGEND && legend.show && legend.live && shouldSetLegend) {}
+
+		if (!ready) {
+			ready = true;
+			self.status = 1;
+
+			fire("ready");
+		}
+
+		viaAutoScaleX = false;
+
+		queuedCommit = false;
+	}
+
+	self.redraw = (rebuildPaths, recalcAxes) => {
+		shouldConvergeSize = recalcAxes || false;
+
+		if (rebuildPaths !== false)
+			_setScale(xScaleKey, scaleX.min, scaleX.max);
+		else
+			commit();
+	};
+
+	// redraw() => setScale('x', scales.x.min, scales.x.max);
+
+	// explicit, never re-ranged (is this actually true? for x and y)
+	function setScale(key, opts) {
+		let sc = scales[key];
+
+		if (sc.from == null) {
+			if (dataLen == 0) {
+				let minMax = sc.range(self, opts.min, opts.max, key);
+				opts.min = minMax[0];
+				opts.max = minMax[1];
+			}
+
+			if (opts.min > opts.max) {
+				let _min = opts.min;
+				opts.min = opts.max;
+				opts.max = _min;
+			}
+
+			if (dataLen > 1 && opts.min != null && opts.max != null && opts.max - opts.min < 1e-16)
+				return;
+
+			if (key == xScaleKey) {
+				if (sc.distr == 2 && dataLen > 0) {
+					opts.min = closestIdx(opts.min, data[0]);
+					opts.max = closestIdx(opts.max, data[0]);
+
+					if (opts.min == opts.max)
+						opts.max++;
+				}
+			}
+
+		//	log("setScale()", arguments);
+
+			pendScales[key] = opts;
+
+			shouldSetScales = true;
+			commit();
+		}
+	}
+
+	self.setScale = setScale;
+
+//	INTERACTION
+
+	let xCursor;
+	let yCursor;
+	let vCursor;
+	let hCursor;
+
+	// starting position before cursor.move
+	let rawMouseLeft0;
+	let rawMouseTop0;
+
+	// starting position
+	let mouseLeft0;
+	let mouseTop0;
+
+	// current position before cursor.move
+	let rawMouseLeft1;
+	let rawMouseTop1;
+
+	// current position
+	let mouseLeft1;
+	let mouseTop1;
+
+	let dragging = false;
+
+	const drag = cursor.drag;
+
+	let dragX = drag.x;
+	let dragY = drag.y;
+
+	if (cursor.show) {
+		if (cursor.x)
+			xCursor = placeDiv(CURSOR_X, over);
+		if (cursor.y)
+			yCursor = placeDiv(CURSOR_Y, over);
+
+		if (scaleX.ori == 0) {
+			vCursor = xCursor;
+			hCursor = yCursor;
+		}
+		else {
+			vCursor = yCursor;
+			hCursor = xCursor;
+		}
+
+		mouseLeft1 = cursor.left;
+		mouseTop1 = cursor.top;
+	}
+
+	const select = self.select = assign({
+		show:   true,
+		over:   true,
+		left:   0,
+		width:  0,
+		top:    0,
+		height: 0,
+	}, opts.select);
+
+	const selectDiv = select.show ? placeDiv(SELECT, select.over ? over : under) : null;
+
+	function setSelect(opts, _fire) {
+		if (select.show) {
+			for (let prop in opts)
+				setStylePx(selectDiv, prop, select[prop] = opts[prop]);
+
+			_fire !== false && fire("setSelect");
+		}
+	}
+
+	self.setSelect = setSelect;
+
+	function toggleDOM(i, onOff) {
+		let s = series[i];
+		let label = showLegend ? legendRows[i] : null;
+
+		if (s.show)
+			label && remClass(label, OFF);
+		else {
+			label && addClass(label, OFF);
+			cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+		}
+	}
+
+	function _setScale(key, min, max) {
+		setScale(key, {min, max});
+	}
+
+	function setSeries(i, opts, _fire, _pub) {
+	//	log("setSeries()", arguments);
+
+		let s = series[i];
+
+		if (opts.focus != null)
+			setFocus(i);
+
+		if (opts.show != null) {
+			s.show = opts.show;
+			toggleDOM(i, opts.show);
+
+			_setScale(mode == 2 ? s.facets[1].scale : s.scale, null, null);
+			commit();
+		}
+
+		_fire !== false && fire("setSeries", i, opts);
+
+		_pub && pubSync("setSeries", self, i, opts);
+	}
+
+	self.setSeries = setSeries;
+
+	function setBand(bi, opts) {
+		assign(bands[bi], opts);
+	}
+
+	function addBand(opts, bi) {
+		opts.fill = fnOrSelf(opts.fill || null);
+		bi = bi == null ? bands.length : bi;
+		bands.splice(bi, 0, opts);
+	}
+
+	function delBand(bi) {
+		if (bi == null)
+			bands.length = 0;
+		else
+			bands.splice(bi, 1);
+	}
+
+	self.addBand = addBand;
+	self.setBand = setBand;
+	self.delBand = delBand;
+
+	function setAlpha(i, value) {
+		series[i].alpha = value;
+
+		if (cursor.show && cursorPts[i])
+			cursorPts[i].style.opacity = value;
+
+		if (showLegend && legendRows[i])
+			legendRows[i].style.opacity = value;
+	}
+
+	// y-distance
+	let closestDist;
+	let closestSeries;
+	let focusedSeries;
+	const FOCUS_TRUE  = {focus: true};
+	const FOCUS_FALSE = {focus: false};
+
+	function setFocus(i) {
+		if (i != focusedSeries) {
+		//	log("setFocus()", arguments);
+
+			let allFocused = i == null;
+
+			let _setAlpha = focus.alpha != 1;
+
+			series.forEach((s, i2) => {
+				let isFocused = allFocused || i2 == 0 || i2 == i;
+				s._focus = allFocused ? null : isFocused;
+				_setAlpha && setAlpha(i2, isFocused ? 1 : focus.alpha);
+			});
+
+			focusedSeries = i;
+			_setAlpha && commit();
+		}
+	}
+
+	if (showLegend && cursorFocus) {
+		on(mouseleave, legendEl, e => {
+			if (cursor._lock)
+				return;
+			setSeries(null, FOCUS_FALSE, true, syncOpts.setSeries);
+			updateCursor(null, true, false);
+		});
+	}
+
+	function posToVal(pos, scale, can) {
+		let sc = scales[scale];
+
+		if (can)
+			pos = pos / pxRatio - (sc.ori == 1 ? plotTopCss : plotLftCss);
+
+		let dim = plotWidCss;
+
+		if (sc.ori == 1) {
+			dim = plotHgtCss;
+			pos = dim - pos;
+		}
+
+		if (sc.dir == -1)
+			pos = dim - pos;
+
+		let _min = sc._min,
+			_max = sc._max,
+			pct = pos / dim;
+
+		let sv = _min + (_max - _min) * pct;
+
+		let distr = sc.distr;
+
+		return (
+			distr == 3 ? pow(10, sv) :
+			distr == 4 ? sinh(sv, sc.asinh) :
+			sv
+		);
+	}
+
+	function closestIdxFromXpos(pos, can) {
+		let v = posToVal(pos, xScaleKey, can);
+		return closestIdx(v, data[0], i0, i1);
+	}
+
+	self.valToIdx = val => closestIdx(val, data[0]);
+	self.posToIdx = closestIdxFromXpos;
+	self.posToVal = posToVal;
+	self.valToPos = (val, scale, can) => (
+		scales[scale].ori == 0 ?
+		getHPos(val, scales[scale],
+			can ? plotWid : plotWidCss,
+			can ? plotLft : 0,
+		) :
+		getVPos(val, scales[scale],
+			can ? plotHgt : plotHgtCss,
+			can ? plotTop : 0,
+		)
+	);
+
+	// defers calling expensive functions
+	function batch(fn) {
+		fn(self);
+		commit();
+	}
+
+	self.batch = batch;
+
+	(self.setCursor = (opts, _fire, _pub) => {
+		mouseLeft1 = opts.left;
+		mouseTop1 = opts.top;
+	//	assign(cursor, opts);
+		updateCursor(null, _fire, _pub);
+	});
+
+	function setSelH(off, dim) {
+		setStylePx(selectDiv, LEFT,  select.left = off);
+		setStylePx(selectDiv, WIDTH, select.width = dim);
+	}
+
+	function setSelV(off, dim) {
+		setStylePx(selectDiv, TOP,    select.top = off);
+		setStylePx(selectDiv, HEIGHT, select.height = dim);
+	}
+
+	let setSelX = scaleX.ori == 0 ? setSelH : setSelV;
+	let setSelY = scaleX.ori == 1 ? setSelH : setSelV;
+
+	function syncLegend() {
+		if (showLegend && legend.live) {
+			for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+				if (i == 0 && multiValLegend)
+					continue;
+
+				let vals = legend.values[i];
+
+				let j = 0;
+
+				for (let k in vals)
+					legendCells[i][j++].firstChild.nodeValue = vals[k];
+			}
+		}
+	}
+
+	function setLegend(opts, _fire) {
+		if (opts != null) {
+			let idx = opts.idx;
+
+			legend.idx = idx;
+			series.forEach((s, sidx) => {
+				(sidx > 0 || !multiValLegend) && setLegendValues(sidx, idx);
+			});
+		}
+
+		if (showLegend && legend.live)
+			syncLegend();
+
+		shouldSetLegend = false;
+
+		_fire !== false && fire("setLegend");
+	}
+
+	self.setLegend = setLegend;
+
+	function setLegendValues(sidx, idx) {
+		let val;
+
+		if (idx == null)
+			val = NULL_LEGEND_VALUES;
+		else {
+			let s = series[sidx];
+			let src = sidx == 0 && xScaleDistr == 2 ? data0 : data[sidx];
+			val = multiValLegend ? s.values(self, sidx, idx) : {_: s.value(self, src[idx], sidx, idx)};
+		}
+
+		legend.values[sidx] = val;
+	}
+
+	function updateCursor(src, _fire, _pub) {
+	//	ts == null && log("updateCursor()", arguments);
+
+		rawMouseLeft1 = mouseLeft1;
+		rawMouseTop1 = mouseTop1;
+
+		[mouseLeft1, mouseTop1] = cursor.move(self, mouseLeft1, mouseTop1);
+
+		if (cursor.show) {
+			vCursor && elTrans(vCursor, round(mouseLeft1), 0, plotWidCss, plotHgtCss);
+			hCursor && elTrans(hCursor, 0, round(mouseTop1), plotWidCss, plotHgtCss);
+		}
+
+		let idx;
+
+		// when zooming to an x scale range between datapoints the binary search
+		// for nearest min/max indices results in this condition. cheap hack :D
+		let noDataInRange = i0 > i1; // works for mode 1 only
+
+		closestDist = inf;
+
+		// TODO: extract
+		let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
+		let yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss;
+
+		// if cursor hidden, hide points & clear legend vals
+		if (mouseLeft1 < 0 || dataLen == 0 || noDataInRange) {
+			idx = null;
+
+			for (let i = 0; i < series.length; i++) {
+				if (i > 0) {
+					cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+				}
+			}
+
+			if (cursorFocus)
+				setSeries(null, FOCUS_TRUE, true, src == null && syncOpts.setSeries);
+
+			if (legend.live) {
+				activeIdxs.fill(null);
+				shouldSetLegend = true;
+
+				for (let i = 0; i < series.length; i++)
+					legend.values[i] = NULL_LEGEND_VALUES;
+			}
+		}
+		else {
+		//	let pctY = 1 - (y / rect.height);
+
+			let mouseXPos, valAtPosX, xPos;
+
+			if (mode == 1) {
+				mouseXPos = scaleX.ori == 0 ? mouseLeft1 : mouseTop1;
+				valAtPosX = posToVal(mouseXPos, xScaleKey);
+				idx = closestIdx(valAtPosX, data[0], i0, i1);
+				xPos = incrRoundUp(valToPosX(data[0][idx], scaleX, xDim, 0), 0.5);
+			}
+
+			for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+				let s = series[i];
+
+				let idx1  = activeIdxs[i];
+				let yVal1 = mode == 1 ? data[i][idx1] : data[i][1][idx1];
+
+				let idx2  = cursor.dataIdx(self, i, idx, valAtPosX);
+				let yVal2 = mode == 1 ? data[i][idx2] : data[i][1][idx2];
+
+				shouldSetLegend = shouldSetLegend || yVal2 != yVal1 || idx2 != idx1;
+
+				activeIdxs[i] = idx2;
+
+				let xPos2 = idx2 == idx ? xPos : incrRoundUp(valToPosX(mode == 1 ? data[0][idx2] : data[i][0][idx2], scaleX, xDim, 0), 0.5);
+
+				if (i > 0 && s.show) {
+					let yPos = yVal2 == null ? -10 : incrRoundUp(valToPosY(yVal2, mode == 1 ? scales[s.scale] : scales[s.facets[1].scale], yDim, 0), 0.5);
+
+					if (yPos > 0 && mode == 1) {
+						let dist = abs(yPos - mouseTop1);
+
+						if (dist <= closestDist) {
+							closestDist = dist;
+							closestSeries = i;
+						}
+					}
+
+					let hPos, vPos;
+
+					if (scaleX.ori == 0) {
+						hPos = xPos2;
+						vPos = yPos;
+					}
+					else {
+						hPos = yPos;
+						vPos = xPos2;
+					}
+
+					if (shouldSetLegend && cursorPts.length > 1) {
+						elColor(cursorPts[i], cursor.points.fill(self, i), cursor.points.stroke(self, i));
+
+						let ptWid, ptHgt, ptLft, ptTop,
+							centered = true,
+							getBBox = cursor.points.bbox;
+
+						if (getBBox != null) {
+							centered = false;
+
+							let bbox = getBBox(self, i);
+
+							ptLft = bbox.left;
+							ptTop = bbox.top;
+							ptWid = bbox.width;
+							ptHgt = bbox.height;
+						}
+						else {
+							ptLft = hPos;
+							ptTop = vPos;
+							ptWid = ptHgt = cursor.points.size(self, i);
+						}
+
+						elSize(cursorPts[i], ptWid, ptHgt, centered);
+						elTrans(cursorPts[i], ptLft, ptTop, plotWidCss, plotHgtCss);
+					}
+				}
+
+				if (legend.live) {
+					if (!shouldSetLegend || i == 0 && multiValLegend)
+						continue;
+
+					setLegendValues(i, idx2);
+				}
+			}
+		}
+
+		cursor.idx = idx;
+		cursor.left = mouseLeft1;
+		cursor.top = mouseTop1;
+
+		if (shouldSetLegend) {
+			legend.idx = idx;
+			setLegend();
+		}
+
+		// nit: cursor.drag.setSelect is assumed always true
+		if (select.show && dragging) {
+			if (src != null) {
+				let [xKey, yKey] = syncOpts.scales;
+				let [matchXKeys, matchYKeys] = syncOpts.match;
+				let [xKeySrc, yKeySrc] = src.cursor.sync.scales;
+
+				// match the dragX/dragY implicitness/explicitness of src
+				let sdrag = src.cursor.drag;
+				dragX = sdrag._x;
+				dragY = sdrag._y;
+
+				let { left, top, width, height } = src.select;
+
+				let sori = src.scales[xKey].ori;
+				let sPosToVal = src.posToVal;
+
+				let sOff, sDim, sc, a, b;
+
+				let matchingX = xKey != null && matchXKeys(xKey, xKeySrc);
+				let matchingY = yKey != null && matchYKeys(yKey, yKeySrc);
+
+				if (matchingX) {
+					if (sori == 0) {
+						sOff = left;
+						sDim = width;
+					}
+					else {
+						sOff = top;
+						sDim = height;
+					}
+
+					if (dragX) {
+						sc = scales[xKey];
+
+						a = valToPosX(sPosToVal(sOff, xKeySrc),        sc, xDim, 0);
+						b = valToPosX(sPosToVal(sOff + sDim, xKeySrc), sc, xDim, 0);
+
+						setSelX(min(a,b), abs(b-a));
+					}
+					else
+						setSelX(0, xDim);
+
+					if (!matchingY)
+						setSelY(0, yDim);
+				}
+
+				if (matchingY) {
+					if (sori == 1) {
+						sOff = left;
+						sDim = width;
+					}
+					else {
+						sOff = top;
+						sDim = height;
+					}
+
+					if (dragY) {
+						sc = scales[yKey];
+
+						a = valToPosY(sPosToVal(sOff, yKeySrc),        sc, yDim, 0);
+						b = valToPosY(sPosToVal(sOff + sDim, yKeySrc), sc, yDim, 0);
+
+						setSelY(min(a,b), abs(b-a));
+					}
+					else
+						setSelY(0, yDim);
+
+					if (!matchingX)
+						setSelX(0, xDim);
+				}
+			}
+			else {
+				let rawDX = abs(rawMouseLeft1 - rawMouseLeft0);
+				let rawDY = abs(rawMouseTop1 - rawMouseTop0);
+
+				if (scaleX.ori == 1) {
+					let _rawDX = rawDX;
+					rawDX = rawDY;
+					rawDY = _rawDX;
+				}
+
+				dragX = drag.x && rawDX >= drag.dist;
+				dragY = drag.y && rawDY >= drag.dist;
+
+				let uni = drag.uni;
+
+				if (uni != null) {
+					// only calc drag status if they pass the dist thresh
+					if (dragX && dragY) {
+						dragX = rawDX >= uni;
+						dragY = rawDY >= uni;
+
+						// force unidirectionality when both are under uni limit
+						if (!dragX && !dragY) {
+							if (rawDY > rawDX)
+								dragY = true;
+							else
+								dragX = true;
+						}
+					}
+				}
+				else if (drag.x && drag.y && (dragX || dragY))
+					// if omni with no uni then both dragX / dragY should be true if either is true
+					dragX = dragY = true;
+
+				let p0, p1;
+
+				if (dragX) {
+					if (scaleX.ori == 0) {
+						p0 = mouseLeft0;
+						p1 = mouseLeft1;
+					}
+					else {
+						p0 = mouseTop0;
+						p1 = mouseTop1;
+					}
+
+					setSelX(min(p0, p1), abs(p1 - p0));
+
+					if (!dragY)
+						setSelY(0, yDim);
+				}
+
+				if (dragY) {
+					if (scaleX.ori == 1) {
+						p0 = mouseLeft0;
+						p1 = mouseLeft1;
+					}
+					else {
+						p0 = mouseTop0;
+						p1 = mouseTop1;
+					}
+
+					setSelY(min(p0, p1), abs(p1 - p0));
+
+					if (!dragX)
+						setSelX(0, xDim);
+				}
+
+				// the drag didn't pass the dist requirement
+				if (!dragX && !dragY) {
+					setSelX(0, 0);
+					setSelY(0, 0);
+				}
+			}
+		}
+
+		drag._x = dragX;
+		drag._y = dragY;
+
+		if (src == null) {
+			if (_pub) {
+				if (syncKey != null) {
+					let [xSyncKey, ySyncKey] = syncOpts.scales;
+
+					syncOpts.values[0] = xSyncKey != null ? posToVal(scaleX.ori == 0 ? mouseLeft1 : mouseTop1, xSyncKey) : null;
+					syncOpts.values[1] = ySyncKey != null ? posToVal(scaleX.ori == 1 ? mouseLeft1 : mouseTop1, ySyncKey) : null;
+				}
+
+				pubSync(mousemove, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, idx);
+			}
+
+			if (cursorFocus) {
+				let shouldPub = _pub && syncOpts.setSeries;
+				let p = focus.prox;
+
+				if (focusedSeries == null) {
+					if (closestDist <= p)
+						setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+				}
+				else {
+					if (closestDist > p)
+						setSeries(null, FOCUS_TRUE, true, shouldPub);
+					else if (closestSeries != focusedSeries)
+						setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+				}
+			}
+		}
+
+		ready && _fire !== false && fire("setCursor");
+	}
+
+	let rect = null;
+
+	function syncRect(defer) {
+		if (defer === true)
+			rect = null;
+		else {
+			rect = over.getBoundingClientRect();
+			fire("syncRect", rect);
+		}
+	}
+
+	function mouseMove(e, src, _l, _t, _w, _h, _i) {
+		if (cursor._lock)
+			return;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, false, e != null);
+
+		if (e != null)
+			updateCursor(null, true, true);
+		else
+			updateCursor(src, true, false);
+	}
+
+	function cacheMouse(e, src, _l, _t, _w, _h, _i, initial, snap) {
+		if (rect == null)
+			syncRect(false);
+
+		if (e != null) {
+			_l = e.clientX - rect.left;
+			_t = e.clientY - rect.top;
+		}
+		else {
+			if (_l < 0 || _t < 0) {
+				mouseLeft1 = -10;
+				mouseTop1 = -10;
+				return;
+			}
+
+			let [xKey, yKey] = syncOpts.scales;
+
+			let syncOptsSrc = src.cursor.sync;
+			let [xValSrc, yValSrc] = syncOptsSrc.values;
+			let [xKeySrc, yKeySrc] = syncOptsSrc.scales;
+			let [matchXKeys, matchYKeys] = syncOpts.match;
+
+			let rotSrc = src.scales[xKeySrc].ori == 1;
+
+			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss,
+				yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss,
+				_xDim = rotSrc ? _h : _w,
+				_yDim = rotSrc ? _w : _h,
+				_xPos = rotSrc ? _t : _l,
+				_yPos = rotSrc ? _l : _t;
+
+			if (xKeySrc != null)
+				_l = matchXKeys(xKey, xKeySrc) ? getPos(xValSrc, scales[xKey], xDim, 0) : -10;
+			else
+				_l = xDim * (_xPos/_xDim);
+
+			if (yKeySrc != null)
+				_t = matchYKeys(yKey, yKeySrc) ? getPos(yValSrc, scales[yKey], yDim, 0) : -10;
+			else
+				_t = yDim * (_yPos/_yDim);
+
+			if (scaleX.ori == 1) {
+				let __l = _l;
+				_l = _t;
+				_t = __l;
+			}
+		}
+
+		if (snap) {
+			if (_l <= 1 || _l >= plotWidCss - 1)
+				_l = incrRound(_l, plotWidCss);
+
+			if (_t <= 1 || _t >= plotHgtCss - 1)
+				_t = incrRound(_t, plotHgtCss);
+		}
+
+		if (initial) {
+			rawMouseLeft0 = _l;
+			rawMouseTop0 = _t;
+
+			[mouseLeft0, mouseTop0] = cursor.move(self, _l, _t);
+		}
+		else {
+			mouseLeft1 = _l;
+			mouseTop1 = _t;
+		}
+	}
+
+	function hideSelect() {
+		setSelect({
+			width: 0,
+			height: 0,
+		}, false);
+	}
+
+	function mouseDown(e, src, _l, _t, _w, _h, _i) {
+		dragging = true;
+		dragX = dragY = drag._x = drag._y = false;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, true, false);
+
+		if (e != null) {
+			onMouse(mouseup, doc, mouseUp);
+			pubSync(mousedown, self, mouseLeft0, mouseTop0, plotWidCss, plotHgtCss, null);
+		}
+	}
+
+	function mouseUp(e, src, _l, _t, _w, _h, _i) {
+		dragging = drag._x = drag._y = false;
+
+		cacheMouse(e, src, _l, _t, _w, _h, _i, false, true);
+
+		let { left, top, width, height } = select;
+
+		let hasSelect = width > 0 || height > 0;
+
+		hasSelect && setSelect(select);
+
+		if (drag.setScale && hasSelect) {
+		//	if (syncKey != null) {
+		//		dragX = drag.x;
+		//		dragY = drag.y;
+		//	}
+
+			let xOff = left,
+				xDim = width,
+				yOff = top,
+				yDim = height;
+
+			if (scaleX.ori == 1) {
+				xOff = top,
+				xDim = height,
+				yOff = left,
+				yDim = width;
+			}
+
+			if (dragX) {
+				_setScale(xScaleKey,
+					posToVal(xOff, xScaleKey),
+					posToVal(xOff + xDim, xScaleKey)
+				);
+			}
+
+			if (dragY) {
+				for (let k in scales) {
+					let sc = scales[k];
+
+					if (k != xScaleKey && sc.from == null && sc.min != inf) {
+						_setScale(k,
+							posToVal(yOff + yDim, k),
+							posToVal(yOff, k)
+						);
+					}
+				}
+			}
+
+			hideSelect();
+		}
+		else if (cursor.lock) {
+			cursor._lock = !cursor._lock;
+
+			if (!cursor._lock)
+				updateCursor(null, true, false);
+		}
+
+		if (e != null) {
+			offMouse(mouseup, doc);
+			pubSync(mouseup, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+		}
+	}
+
+	function mouseLeave(e, src, _l, _t, _w, _h, _i) {
+		if (!cursor._lock) {
+			let _dragging = dragging;
+
+			if (dragging) {
+				// handle case when mousemove aren't fired all the way to edges by browser
+				let snapH = true;
+				let snapV = true;
+				let snapProx = 10;
+
+				let dragH, dragV;
+
+				if (scaleX.ori == 0) {
+					dragH = dragX;
+					dragV = dragY;
+				}
+				else {
+					dragH = dragY;
+					dragV = dragX;
+				}
+
+				if (dragH && dragV) {
+					// maybe omni corner snap
+					snapH = mouseLeft1 <= snapProx || mouseLeft1 >= plotWidCss - snapProx;
+					snapV = mouseTop1  <= snapProx || mouseTop1  >= plotHgtCss - snapProx;
+				}
+
+				if (dragH && snapH)
+					mouseLeft1 = mouseLeft1 < mouseLeft0 ? 0 : plotWidCss;
+
+				if (dragV && snapV)
+					mouseTop1 = mouseTop1 < mouseTop0 ? 0 : plotHgtCss;
+
+				updateCursor(null, true, true);
+
+				dragging = false;
+			}
+
+			mouseLeft1 = -10;
+			mouseTop1 = -10;
+
+			// passing a non-null timestamp to force sync/mousemove event
+			updateCursor(null, true, true);
+
+			if (_dragging)
+				dragging = _dragging;
+		}
+	}
+
+	function dblClick(e, src, _l, _t, _w, _h, _i) {
+		autoScaleX();
+
+		hideSelect();
+
+		if (e != null)
+			pubSync(dblclick, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+	}
+
+	function syncPxRatio() {
+		axes.forEach(syncFontSize);
+		_setSize(self.width, self.height, true);
+	}
+
+	on(dppxchange, win, syncPxRatio);
+
+	// internal pub/sub
+	const events = {};
+
+	events.mousedown = mouseDown;
+	events.mousemove = mouseMove;
+	events.mouseup = mouseUp;
+	events.dblclick = dblClick;
+	events["setSeries"] = (e, src, idx, opts) => {
+		setSeries(idx, opts, true, false);
+	};
+
+	if (cursor.show) {
+		onMouse(mousedown,  over, mouseDown);
+		onMouse(mousemove,  over, mouseMove);
+		onMouse(mouseenter, over, syncRect);
+		onMouse(mouseleave, over, mouseLeave);
+
+		onMouse(dblclick, over, dblClick);
+
+		cursorPlots.add(self);
+
+		self.syncRect = syncRect;
+	}
+
+	// external on/off
+	const hooks = self.hooks = opts.hooks || {};
+
+	function fire(evName, a1, a2) {
+		if (evName in hooks) {
+			hooks[evName].forEach(fn => {
+				fn.call(null, self, a1, a2);
+			});
+		}
+	}
+
+	(opts.plugins || []).forEach(p => {
+		for (let evName in p.hooks)
+			hooks[evName] = (hooks[evName] || []).concat(p.hooks[evName]);
+	});
+
+	const syncOpts = assign({
+		key: null,
+		setSeries: false,
+		filters: {
+			pub: retTrue,
+			sub: retTrue,
+		},
+		scales: [xScaleKey, series[1] ? series[1].scale : null],
+		match: [retEq, retEq],
+		values: [null, null],
+	}, cursor.sync);
+
+	(cursor.sync = syncOpts);
+
+	const syncKey = syncOpts.key;
+
+	const sync = _sync(syncKey);
+
+	function pubSync(type, src, x, y, w, h, i) {
+		if (syncOpts.filters.pub(type, src, x, y, w, h, i))
+			sync.pub(type, src, x, y, w, h, i);
+	}
+
+	sync.sub(self);
+
+	function pub(type, src, x, y, w, h, i) {
+		if (syncOpts.filters.sub(type, src, x, y, w, h, i))
+			events[type](null, src, x, y, w, h, i);
+	}
+
+	(self.pub = pub);
+
+	function destroy() {
+		sync.unsub(self);
+		cursorPlots.delete(self);
+		mouseListeners.clear();
+		off(dppxchange, win, syncPxRatio);
+		root.remove();
+		fire("destroy");
+	}
+
+	self.destroy = destroy;
+
+	function _init() {
+		fire("init", opts, data);
+
+		setData(data || opts.data, false);
+
+		if (pendScales[xScaleKey])
+			setScale(xScaleKey, pendScales[xScaleKey]);
+		else
+			autoScaleX();
+
+		_setSize(opts.width, opts.height);
+
+		updateCursor(null, true, false);
+
+		setSelect(select, false);
+	}
+
+	series.forEach(initSeries);
+
+	axes.forEach(initAxis);
+
+	if (then) {
+		if (then instanceof HTMLElement) {
+			then.appendChild(root);
+			_init();
+		}
+		else
+			then(self, _init);
+	}
+	else
+		_init();
+
+	return self;
+}
+
+uPlot.assign = assign;
+uPlot.fmtNum = fmtNum;
+uPlot.rangeNum = rangeNum;
+uPlot.rangeLog = rangeLog;
+uPlot.rangeAsinh = rangeAsinh;
+uPlot.orient   = orient;
+
+{
+	uPlot.join = join;
+}
+
+{
+	uPlot.fmtDate = fmtDate;
+	uPlot.tzDate  = tzDate;
+}
+
+{
+	uPlot.sync = _sync;
+}
+
+{
+	uPlot.addGap = addGap;
+	uPlot.clipGaps = clipGaps;
+
+	let paths = uPlot.paths = {
+		points,
+	};
+
+	(paths.linear  = linear);
+	(paths.stepped = stepped);
+	(paths.bars    = bars);
+	(paths.spline  = monotoneCubic);
+}
+
+export { uPlot as default };
diff --git a/src/main/resources/static/plugins/uplot/uPlot.iife.js b/src/main/resources/static/plugins/uplot/uPlot.iife.js
new file mode 100644
index 0000000..e0e776c
--- /dev/null
+++ b/src/main/resources/static/plugins/uplot/uPlot.iife.js
@@ -0,0 +1,5215 @@
+/**
+* Copyright (c) 2021, Leon Sorokin
+* All rights reserved. (MIT Licensed)
+*
+* uPlot.js (μPlot)
+* A small, fast chart for time series, lines, areas, ohlc & bars
+* https://github.com/leeoniya/uPlot (v1.6.18)
+*/
+
+var uPlot = (function () {
+	'use strict';
+
+	const FEAT_TIME          = true;
+
+	// binary search for index of closest value
+	function closestIdx(num, arr, lo, hi) {
+		let mid;
+		lo = lo || 0;
+		hi = hi || arr.length - 1;
+		let bitwise = hi <= 2147483647;
+
+		while (hi - lo > 1) {
+			mid = bitwise ? (lo + hi) >> 1 : floor((lo + hi) / 2);
+
+			if (arr[mid] < num)
+				lo = mid;
+			else
+				hi = mid;
+		}
+
+		if (num - arr[lo] <= arr[hi] - num)
+			return lo;
+
+		return hi;
+	}
+
+	function nonNullIdx(data, _i0, _i1, dir) {
+		for (let i = dir == 1 ? _i0 : _i1; i >= _i0 && i <= _i1; i += dir) {
+			if (data[i] != null)
+				return i;
+		}
+
+		return -1;
+	}
+
+	function getMinMax(data, _i0, _i1, sorted) {
+	//	console.log("getMinMax()");
+
+		let _min = inf;
+		let _max = -inf;
+
+		if (sorted == 1) {
+			_min = data[_i0];
+			_max = data[_i1];
+		}
+		else if (sorted == -1) {
+			_min = data[_i1];
+			_max = data[_i0];
+		}
+		else {
+			for (let i = _i0; i <= _i1; i++) {
+				if (data[i] != null) {
+					_min = min(_min, data[i]);
+					_max = max(_max, data[i]);
+				}
+			}
+		}
+
+		return [_min, _max];
+	}
+
+	function getMinMaxLog(data, _i0, _i1) {
+	//	console.log("getMinMax()");
+
+		let _min = inf;
+		let _max = -inf;
+
+		for (let i = _i0; i <= _i1; i++) {
+			if (data[i] > 0) {
+				_min = min(_min, data[i]);
+				_max = max(_max, data[i]);
+			}
+		}
+
+		return [
+			_min ==  inf ?  1 : _min,
+			_max == -inf ? 10 : _max,
+		];
+	}
+
+	const _fixedTuple = [0, 0];
+
+	function fixIncr(minIncr, maxIncr, minExp, maxExp) {
+		_fixedTuple[0] = minExp < 0 ? roundDec(minIncr, -minExp) : minIncr;
+		_fixedTuple[1] = maxExp < 0 ? roundDec(maxIncr, -maxExp) : maxIncr;
+		return _fixedTuple;
+	}
+
+	function rangeLog(min, max, base, fullMags) {
+		let minSign = sign(min);
+
+		let logFn = base == 10 ? log10 : log2;
+
+		if (min == max) {
+			if (minSign == -1) {
+				min *= base;
+				max /= base;
+			}
+			else {
+				min /= base;
+				max *= base;
+			}
+		}
+
+		let minExp, maxExp, minMaxIncrs;
+
+		if (fullMags) {
+			minExp = floor(logFn(min));
+			maxExp =  ceil(logFn(max));
+
+			minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+			min = minMaxIncrs[0];
+			max = minMaxIncrs[1];
+		}
+		else {
+			minExp = floor(logFn(abs(min)));
+			maxExp = floor(logFn(abs(max)));
+
+			minMaxIncrs = fixIncr(pow(base, minExp), pow(base, maxExp), minExp, maxExp);
+
+			min = incrRoundDn(min, minMaxIncrs[0]);
+			max = incrRoundUp(max, minMaxIncrs[1]);
+		}
+
+		return [min, max];
+	}
+
+	function rangeAsinh(min, max, base, fullMags) {
+		let minMax = rangeLog(min, max, base, fullMags);
+
+		if (min == 0)
+			minMax[0] = 0;
+
+		if (max == 0)
+			minMax[1] = 0;
+
+		return minMax;
+	}
+
+	const rangePad = 0.1;
+
+	const autoRangePart = {
+		mode: 3,
+		pad: rangePad,
+	};
+
+	const _eqRangePart = {
+		pad:  0,
+		soft: null,
+		mode: 0,
+	};
+
+	const _eqRange = {
+		min: _eqRangePart,
+		max: _eqRangePart,
+	};
+
+	// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+	// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+	function rangeNum(_min, _max, mult, extra) {
+		if (isObj(mult))
+			return _rangeNum(_min, _max, mult);
+
+		_eqRangePart.pad  = mult;
+		_eqRangePart.soft = extra ? 0 : null;
+		_eqRangePart.mode = extra ? 3 : 0;
+
+		return _rangeNum(_min, _max, _eqRange);
+	}
+
+	// nullish coalesce
+	function ifNull(lh, rh) {
+		return lh == null ? rh : lh;
+	}
+
+	// checks if given index range in an array contains a non-null value
+	// aka a range-bounded Array.some()
+	function hasData(data, idx0, idx1) {
+		idx0 = ifNull(idx0, 0);
+		idx1 = ifNull(idx1, data.length - 1);
+
+		while (idx0 <= idx1) {
+			if (data[idx0] != null)
+				return true;
+			idx0++;
+		}
+
+		return false;
+	}
+
+	function _rangeNum(_min, _max, cfg) {
+		let cmin = cfg.min;
+		let cmax = cfg.max;
+
+		let padMin = ifNull(cmin.pad, 0);
+		let padMax = ifNull(cmax.pad, 0);
+
+		let hardMin = ifNull(cmin.hard, -inf);
+		let hardMax = ifNull(cmax.hard,  inf);
+
+		let softMin = ifNull(cmin.soft,  inf);
+		let softMax = ifNull(cmax.soft, -inf);
+
+		let softMinMode = ifNull(cmin.mode, 0);
+		let softMaxMode = ifNull(cmax.mode, 0);
+
+		let delta        = _max - _min;
+
+		// this handles situations like 89.7, 89.69999999999999
+		// by assuming 0.001x deltas are precision errors
+	//	if (delta > 0 && delta < abs(_max) / 1e3)
+	//		delta = 0;
+
+		// treat data as flat if delta is less than 1 billionth
+		if (delta < 1e-9) {
+			delta = 0;
+
+			// if soft mode is 2 and all vals are flat at 0, avoid the 0.1 * 1e3 fallback
+			// this prevents 0,0,0 from ranging to -100,100 when softMin/softMax are -1,1
+			if (_min == 0 || _max == 0) {
+				delta = 1e-9;
+
+				if (softMinMode == 2 && softMin != inf)
+					padMin = 0;
+
+				if (softMaxMode == 2 && softMax != -inf)
+					padMax = 0;
+			}
+		}
+
+		let nonZeroDelta = delta || abs(_max) || 1e3;
+		let mag          = log10(nonZeroDelta);
+		let base         = pow(10, floor(mag));
+
+		let _padMin  = nonZeroDelta * (delta == 0 ? (_min == 0 ? .1 : 1) : padMin);
+		let _newMin  = roundDec(incrRoundDn(_min - _padMin, base/10), 9);
+		let _softMin = _min >= softMin && (softMinMode == 1 || softMinMode == 3 && _newMin <= softMin || softMinMode == 2 && _newMin >= softMin) ? softMin : inf;
+		let minLim   = max(hardMin, _newMin < _softMin && _min >= _softMin ? _softMin : min(_softMin, _newMin));
+
+		let _padMax  = nonZeroDelta * (delta == 0 ? (_max == 0 ? .1 : 1) : padMax);
+		let _newMax  = roundDec(incrRoundUp(_max + _padMax, base/10), 9);
+		let _softMax = _max <= softMax && (softMaxMode == 1 || softMaxMode == 3 && _newMax >= softMax || softMaxMode == 2 && _newMax <= softMax) ? softMax : -inf;
+		let maxLim   = min(hardMax, _newMax > _softMax && _max <= _softMax ? _softMax : max(_softMax, _newMax));
+
+		if (minLim == maxLim && minLim == 0)
+			maxLim = 100;
+
+		return [minLim, maxLim];
+	}
+
+	// alternative: https://stackoverflow.com/a/2254896
+	const fmtNum = new Intl.NumberFormat(navigator.language).format;
+
+	const M = Math;
+
+	const PI = M.PI;
+	const abs = M.abs;
+	const floor = M.floor;
+	const round = M.round;
+	const ceil = M.ceil;
+	const min = M.min;
+	const max = M.max;
+	const pow = M.pow;
+	const sign = M.sign;
+	const log10 = M.log10;
+	const log2 = M.log2;
+	// TODO: seems like this needs to match asinh impl if the passed v is tweaked?
+	const sinh =  (v, linthresh = 1) => M.sinh(v) * linthresh;
+	const asinh = (v, linthresh = 1) => M.asinh(v / linthresh);
+
+	const inf = Infinity;
+
+	function numIntDigits(x) {
+		return (log10((x ^ (x >> 31)) - (x >> 31)) | 0) + 1;
+	}
+
+	function incrRound(num, incr) {
+		return round(num/incr)*incr;
+	}
+
+	function clamp(num, _min, _max) {
+		return min(max(num, _min), _max);
+	}
+
+	function fnOrSelf(v) {
+		return typeof v == "function" ? v : () => v;
+	}
+
+	const retArg0 = _0 => _0;
+
+	const retArg1 = (_0, _1) => _1;
+
+	const retNull = _ => null;
+
+	const retTrue = _ => true;
+
+	const retEq = (a, b) => a == b;
+
+	function incrRoundUp(num, incr) {
+		return ceil(num/incr)*incr;
+	}
+
+	function incrRoundDn(num, incr) {
+		return floor(num/incr)*incr;
+	}
+
+	function roundDec(val, dec) {
+		return round(val * (dec = 10**dec)) / dec;
+	}
+
+	const fixedDec = new Map();
+
+	function guessDec(num) {
+		return ((""+num).split(".")[1] || "").length;
+	}
+
+	function genIncrs(base, minExp, maxExp, mults) {
+		let incrs = [];
+
+		let multDec = mults.map(guessDec);
+
+		for (let exp = minExp; exp < maxExp; exp++) {
+			let expa = abs(exp);
+			let mag = roundDec(pow(base, exp), expa);
+
+			for (let i = 0; i < mults.length; i++) {
+				let _incr = mults[i] * mag;
+				let dec = (_incr >= 0 && exp >= 0 ? 0 : expa) + (exp >= multDec[i] ? 0 : multDec[i]);
+				let incr = roundDec(_incr, dec);
+				incrs.push(incr);
+				fixedDec.set(incr, dec);
+			}
+		}
+
+		return incrs;
+	}
+
+	//export const assign = Object.assign;
+
+	const EMPTY_OBJ = {};
+	const EMPTY_ARR = [];
+
+	const nullNullTuple = [null, null];
+
+	const isArr = Array.isArray;
+
+	function isStr(v) {
+		return typeof v == 'string';
+	}
+
+	function isObj(v) {
+		let is = false;
+
+		if (v != null) {
+			let c = v.constructor;
+			is = c == null || c == Object;
+		}
+
+		return is;
+	}
+
+	function fastIsObj(v) {
+		return v != null && typeof v == 'object';
+	}
+
+	function copy(o, _isObj = isObj) {
+		let out;
+
+		if (isArr(o)) {
+			let val = o.find(v => v != null);
+
+			if (isArr(val) || _isObj(val)) {
+				out = Array(o.length);
+				for (let i = 0; i < o.length; i++)
+				  out[i] = copy(o[i], _isObj);
+			}
+			else
+				out = o.slice();
+		}
+		else if (_isObj(o)) {
+			out = {};
+			for (let k in o)
+				out[k] = copy(o[k], _isObj);
+		}
+		else
+			out = o;
+
+		return out;
+	}
+
+	function assign(targ) {
+		let args = arguments;
+
+		for (let i = 1; i < args.length; i++) {
+			let src = args[i];
+
+			for (let key in src) {
+				if (isObj(targ[key]))
+					assign(targ[key], copy(src[key]));
+				else
+					targ[key] = copy(src[key]);
+			}
+		}
+
+		return targ;
+	}
+
+	// nullModes
+	const NULL_REMOVE = 0;  // nulls are converted to undefined (e.g. for spanGaps: true)
+	const NULL_RETAIN = 1;  // nulls are retained, with alignment artifacts set to undefined (default)
+	const NULL_EXPAND = 2;  // nulls are expanded to include any adjacent alignment artifacts
+
+	// sets undefined values to nulls when adjacent to existing nulls (minesweeper)
+	function nullExpand(yVals, nullIdxs, alignedLen) {
+		for (let i = 0, xi, lastNullIdx = -1; i < nullIdxs.length; i++) {
+			let nullIdx = nullIdxs[i];
+
+			if (nullIdx > lastNullIdx) {
+				xi = nullIdx - 1;
+				while (xi >= 0 && yVals[xi] == null)
+					yVals[xi--] = null;
+
+				xi = nullIdx + 1;
+				while (xi < alignedLen && yVals[xi] == null)
+					yVals[lastNullIdx = xi++] = null;
+			}
+		}
+	}
+
+	// nullModes is a tables-matched array indicating how to treat nulls in each series
+	// output is sorted ASC on the joined field (table[0]) and duplicate join values are collapsed
+	function join(tables, nullModes) {
+		let xVals = new Set();
+
+		for (let ti = 0; ti < tables.length; ti++) {
+			let t = tables[ti];
+			let xs = t[0];
+			let len = xs.length;
+
+			for (let i = 0; i < len; i++)
+				xVals.add(xs[i]);
+		}
+
+		let data = [Array.from(xVals).sort((a, b) => a - b)];
+
+		let alignedLen = data[0].length;
+
+		let xIdxs = new Map();
+
+		for (let i = 0; i < alignedLen; i++)
+			xIdxs.set(data[0][i], i);
+
+		for (let ti = 0; ti < tables.length; ti++) {
+			let t = tables[ti];
+			let xs = t[0];
+
+			for (let si = 1; si < t.length; si++) {
+				let ys = t[si];
+
+				let yVals = Array(alignedLen).fill(undefined);
+
+				let nullMode = nullModes ? nullModes[ti][si] : NULL_RETAIN;
+
+				let nullIdxs = [];
+
+				for (let i = 0; i < ys.length; i++) {
+					let yVal = ys[i];
+					let alignedIdx = xIdxs.get(xs[i]);
+
+					if (yVal === null) {
+						if (nullMode != NULL_REMOVE) {
+							yVals[alignedIdx] = yVal;
+
+							if (nullMode == NULL_EXPAND)
+								nullIdxs.push(alignedIdx);
+						}
+					}
+					else
+						yVals[alignedIdx] = yVal;
+				}
+
+				nullExpand(yVals, nullIdxs, alignedLen);
+
+				data.push(yVals);
+			}
+		}
+
+		return data;
+	}
+
+	const microTask = typeof queueMicrotask == "undefined" ? fn => Promise.resolve().then(fn) : queueMicrotask;
+
+	const WIDTH       = "width";
+	const HEIGHT      = "height";
+	const TOP         = "top";
+	const BOTTOM      = "bottom";
+	const LEFT        = "left";
+	const RIGHT       = "right";
+	const hexBlack    = "#000";
+	const transparent = hexBlack + "0";
+
+	const mousemove   = "mousemove";
+	const mousedown   = "mousedown";
+	const mouseup     = "mouseup";
+	const mouseenter  = "mouseenter";
+	const mouseleave  = "mouseleave";
+	const dblclick    = "dblclick";
+	const resize      = "resize";
+	const scroll      = "scroll";
+
+	const change      = "change";
+	const dppxchange  = "dppxchange";
+
+	const pre = "u-";
+
+	const UPLOT          =       "uplot";
+	const ORI_HZ         = pre + "hz";
+	const ORI_VT         = pre + "vt";
+	const TITLE          = pre + "title";
+	const WRAP           = pre + "wrap";
+	const UNDER          = pre + "under";
+	const OVER           = pre + "over";
+	const AXIS           = pre + "axis";
+	const OFF            = pre + "off";
+	const SELECT         = pre + "select";
+	const CURSOR_X       = pre + "cursor-x";
+	const CURSOR_Y       = pre + "cursor-y";
+	const CURSOR_PT      = pre + "cursor-pt";
+	const LEGEND         = pre + "legend";
+	const LEGEND_LIVE    = pre + "live";
+	const LEGEND_INLINE  = pre + "inline";
+	const LEGEND_THEAD   = pre + "thead";
+	const LEGEND_SERIES  = pre + "series";
+	const LEGEND_MARKER  = pre + "marker";
+	const LEGEND_LABEL   = pre + "label";
+	const LEGEND_VALUE   = pre + "value";
+
+	const doc = document;
+	const win = window;
+	let pxRatio;
+
+	let query;
+
+	function setPxRatio() {
+		let _pxRatio = devicePixelRatio;
+
+		// during print preview, Chrome fires off these dppx queries even without changes
+		if (pxRatio != _pxRatio) {
+			pxRatio = _pxRatio;
+
+			query && off(change, query, setPxRatio);
+			query = matchMedia(`(min-resolution: ${pxRatio - 0.001}dppx) and (max-resolution: ${pxRatio + 0.001}dppx)`);
+			on(change, query, setPxRatio);
+
+			win.dispatchEvent(new CustomEvent(dppxchange));
+		}
+	}
+
+	function addClass(el, c) {
+		if (c != null) {
+			let cl = el.classList;
+			!cl.contains(c) && cl.add(c);
+		}
+	}
+
+	function remClass(el, c) {
+		let cl = el.classList;
+		cl.contains(c) && cl.remove(c);
+	}
+
+	function setStylePx(el, name, value) {
+		el.style[name] = value + "px";
+	}
+
+	function placeTag(tag, cls, targ, refEl) {
+		let el = doc.createElement(tag);
+
+		if (cls != null)
+			addClass(el, cls);
+
+		if (targ != null)
+			targ.insertBefore(el, refEl);
+
+		return el;
+	}
+
+	function placeDiv(cls, targ) {
+		return placeTag("div", cls, targ);
+	}
+
+	const xformCache = new WeakMap();
+
+	function elTrans(el, xPos, yPos, xMax, yMax) {
+		let xform = "translate(" + xPos + "px," + yPos + "px)";
+		let xformOld = xformCache.get(el);
+
+		if (xform != xformOld) {
+			el.style.transform = xform;
+			xformCache.set(el, xform);
+
+			if (xPos < 0 || yPos < 0 || xPos > xMax || yPos > yMax)
+				addClass(el, OFF);
+			else
+				remClass(el, OFF);
+		}
+	}
+
+	const colorCache = new WeakMap();
+
+	function elColor(el, background, borderColor) {
+		let newColor = background + borderColor;
+		let oldColor = colorCache.get(el);
+
+		if (newColor != oldColor) {
+			colorCache.set(el, newColor);
+			el.style.background = background;
+			el.style.borderColor = borderColor;
+		}
+	}
+
+	const sizeCache = new WeakMap();
+
+	function elSize(el, newWid, newHgt, centered) {
+		let newSize = newWid + "" + newHgt;
+		let oldSize = sizeCache.get(el);
+
+		if (newSize != oldSize) {
+			sizeCache.set(el, newSize);
+			el.style.height = newHgt + "px";
+			el.style.width = newWid + "px";
+			el.style.marginLeft = centered ? -newWid/2 + "px" : 0;
+			el.style.marginTop = centered ? -newHgt/2 + "px" : 0;
+		}
+	}
+
+	const evOpts = {passive: true};
+	const evOpts2 = assign({capture: true}, evOpts);
+
+	function on(ev, el, cb, capt) {
+		el.addEventListener(ev, cb, capt ? evOpts2 : evOpts);
+	}
+
+	function off(ev, el, cb, capt) {
+		el.removeEventListener(ev, cb, capt ? evOpts2 : evOpts);
+	}
+
+	setPxRatio();
+
+	const months = [
+		"January",
+		"February",
+		"March",
+		"April",
+		"May",
+		"June",
+		"July",
+		"August",
+		"September",
+		"October",
+		"November",
+		"December",
+	];
+
+	const days = [
+		"Sunday",
+		"Monday",
+		"Tuesday",
+		"Wednesday",
+		"Thursday",
+		"Friday",
+		"Saturday",
+	];
+
+	function slice3(str) {
+		return str.slice(0, 3);
+	}
+
+	const days3 = days.map(slice3);
+
+	const months3 = months.map(slice3);
+
+	const engNames = {
+		MMMM: months,
+		MMM:  months3,
+		WWWW: days,
+		WWW:  days3,
+	};
+
+	function zeroPad2(int) {
+		return (int < 10 ? '0' : '') + int;
+	}
+
+	function zeroPad3(int) {
+		return (int < 10 ? '00' : int < 100 ? '0' : '') + int;
+	}
+
+	/*
+	function suffix(int) {
+		let mod10 = int % 10;
+
+		return int + (
+			mod10 == 1 && int != 11 ? "st" :
+			mod10 == 2 && int != 12 ? "nd" :
+			mod10 == 3 && int != 13 ? "rd" : "th"
+		);
+	}
+	*/
+
+	const subs = {
+		// 2019
+		YYYY:	d => d.getFullYear(),
+		// 19
+		YY:		d => (d.getFullYear()+'').slice(2),
+		// July
+		MMMM:	(d, names) => names.MMMM[d.getMonth()],
+		// Jul
+		MMM:	(d, names) => names.MMM[d.getMonth()],
+		// 07
+		MM:		d => zeroPad2(d.getMonth()+1),
+		// 7
+		M:		d => d.getMonth()+1,
+		// 09
+		DD:		d => zeroPad2(d.getDate()),
+		// 9
+		D:		d => d.getDate(),
+		// Monday
+		WWWW:	(d, names) => names.WWWW[d.getDay()],
+		// Mon
+		WWW:	(d, names) => names.WWW[d.getDay()],
+		// 03
+		HH:		d => zeroPad2(d.getHours()),
+		// 3
+		H:		d => d.getHours(),
+		// 9 (12hr, unpadded)
+		h:		d => {let h = d.getHours(); return h == 0 ? 12 : h > 12 ? h - 12 : h;},
+		// AM
+		AA:		d => d.getHours() >= 12 ? 'PM' : 'AM',
+		// am
+		aa:		d => d.getHours() >= 12 ? 'pm' : 'am',
+		// a
+		a:		d => d.getHours() >= 12 ? 'p' : 'a',
+		// 09
+		mm:		d => zeroPad2(d.getMinutes()),
+		// 9
+		m:		d => d.getMinutes(),
+		// 09
+		ss:		d => zeroPad2(d.getSeconds()),
+		// 9
+		s:		d => d.getSeconds(),
+		// 374
+		fff:	d => zeroPad3(d.getMilliseconds()),
+	};
+
+	function fmtDate(tpl, names) {
+		names = names || engNames;
+		let parts = [];
+
+		let R = /\{([a-z]+)\}|[^{]+/gi, m;
+
+		while (m = R.exec(tpl))
+			parts.push(m[0][0] == '{' ? subs[m[1]] : m[0]);
+
+		return d => {
+			let out = '';
+
+			for (let i = 0; i < parts.length; i++)
+				out += typeof parts[i] == "string" ? parts[i] : parts[i](d, names);
+
+			return out;
+		}
+	}
+
+	const localTz = new Intl.DateTimeFormat().resolvedOptions().timeZone;
+
+	// https://stackoverflow.com/questions/15141762/how-to-initialize-a-javascript-date-to-a-particular-time-zone/53652131#53652131
+	function tzDate(date, tz) {
+		let date2;
+
+		// perf optimization
+		if (tz == 'UTC' || tz == 'Etc/UTC')
+			date2 = new Date(+date + date.getTimezoneOffset() * 6e4);
+		else if (tz == localTz)
+			date2 = date;
+		else {
+			date2 = new Date(date.toLocaleString('en-US', {timeZone: tz}));
+			date2.setMilliseconds(date.getMilliseconds());
+		}
+
+		return date2;
+	}
+
+	//export const series = [];
+
+	// default formatters:
+
+	const onlyWhole = v => v % 1 == 0;
+
+	const allMults = [1,2,2.5,5];
+
+	// ...0.01, 0.02, 0.025, 0.05, 0.1, 0.2, 0.25, 0.5
+	const decIncrs = genIncrs(10, -16, 0, allMults);
+
+	// 1, 2, 2.5, 5, 10, 20, 25, 50...
+	const oneIncrs = genIncrs(10, 0, 16, allMults);
+
+	// 1, 2,      5, 10, 20, 25, 50...
+	const wholeIncrs = oneIncrs.filter(onlyWhole);
+
+	const numIncrs = decIncrs.concat(oneIncrs);
+
+	const NL = "\n";
+
+	const yyyy    = "{YYYY}";
+	const NLyyyy  = NL + yyyy;
+	const md      = "{M}/{D}";
+	const NLmd    = NL + md;
+	const NLmdyy  = NLmd + "/{YY}";
+
+	const aa      = "{aa}";
+	const hmm     = "{h}:{mm}";
+	const hmmaa   = hmm + aa;
+	const NLhmmaa = NL + hmmaa;
+	const ss      = ":{ss}";
+
+	const _ = null;
+
+	function genTimeStuffs(ms) {
+		let	s  = ms * 1e3,
+			m  = s  * 60,
+			h  = m  * 60,
+			d  = h  * 24,
+			mo = d  * 30,
+			y  = d  * 365;
+
+		// min of 1e-3 prevents setting a temporal x ticks too small since Date objects cannot advance ticks smaller than 1ms
+		let subSecIncrs = ms == 1 ? genIncrs(10, 0, 3, allMults).filter(onlyWhole) : genIncrs(10, -3, 0, allMults);
+
+		let timeIncrs = subSecIncrs.concat([
+			// minute divisors (# of secs)
+			s,
+			s * 5,
+			s * 10,
+			s * 15,
+			s * 30,
+			// hour divisors (# of mins)
+			m,
+			m * 5,
+			m * 10,
+			m * 15,
+			m * 30,
+			// day divisors (# of hrs)
+			h,
+			h * 2,
+			h * 3,
+			h * 4,
+			h * 6,
+			h * 8,
+			h * 12,
+			// month divisors TODO: need more?
+			d,
+			d * 2,
+			d * 3,
+			d * 4,
+			d * 5,
+			d * 6,
+			d * 7,
+			d * 8,
+			d * 9,
+			d * 10,
+			d * 15,
+			// year divisors (# months, approx)
+			mo,
+			mo * 2,
+			mo * 3,
+			mo * 4,
+			mo * 6,
+			// century divisors
+			y,
+			y * 2,
+			y * 5,
+			y * 10,
+			y * 25,
+			y * 50,
+			y * 100,
+		]);
+
+		// [0]:   minimum num secs in the tick incr
+		// [1]:   default tick format
+		// [2-7]: rollover tick formats
+		// [8]:   mode: 0: replace [1] -> [2-7], 1: concat [1] + [2-7]
+		const _timeAxisStamps = [
+		//   tick incr    default          year                    month   day                   hour    min       sec   mode
+			[y,           yyyy,            _,                      _,      _,                    _,      _,        _,       1],
+			[d * 28,      "{MMM}",         NLyyyy,                 _,      _,                    _,      _,        _,       1],
+			[d,           md,              NLyyyy,                 _,      _,                    _,      _,        _,       1],
+			[h,           "{h}" + aa,      NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+			[m,           hmmaa,           NLmdyy,                 _,      NLmd,                 _,      _,        _,       1],
+			[s,           ss,              NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+			[ms,          ss + ".{fff}",   NLmdyy + " " + hmmaa,   _,      NLmd + " " + hmmaa,   _,      NLhmmaa,  _,       1],
+		];
+
+		// the ensures that axis ticks, values & grid are aligned to logical temporal breakpoints and not an arbitrary timestamp
+		// https://www.timeanddate.com/time/dst/
+		// https://www.timeanddate.com/time/dst/2019.html
+		// https://www.epochconverter.com/timezones
+		function timeAxisSplits(tzDate) {
+			return (self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace) => {
+				let splits = [];
+				let isYr = foundIncr >= y;
+				let isMo = foundIncr >= mo && foundIncr < y;
+
+				// get the timezone-adjusted date
+				let minDate = tzDate(scaleMin);
+				let minDateTs = roundDec(minDate * ms, 3);
+
+				// get ts of 12am (this lands us at or before the original scaleMin)
+				let minMin = mkDate(minDate.getFullYear(), isYr ? 0 : minDate.getMonth(), isMo || isYr ? 1 : minDate.getDate());
+				let minMinTs = roundDec(minMin * ms, 3);
+
+				if (isMo || isYr) {
+					let moIncr = isMo ? foundIncr / mo : 0;
+					let yrIncr = isYr ? foundIncr / y  : 0;
+				//	let tzOffset = scaleMin - minDateTs;		// needed?
+					let split = minDateTs == minMinTs ? minDateTs : roundDec(mkDate(minMin.getFullYear() + yrIncr, minMin.getMonth() + moIncr, 1) * ms, 3);
+					let splitDate = new Date(round(split / ms));
+					let baseYear = splitDate.getFullYear();
+					let baseMonth = splitDate.getMonth();
+
+					for (let i = 0; split <= scaleMax; i++) {
+						let next = mkDate(baseYear + yrIncr * i, baseMonth + moIncr * i, 1);
+						let offs = next - tzDate(roundDec(next * ms, 3));
+
+						split = roundDec((+next + offs) * ms, 3);
+
+						if (split <= scaleMax)
+							splits.push(split);
+					}
+				}
+				else {
+					let incr0 = foundIncr >= d ? d : foundIncr;
+					let tzOffset = floor(scaleMin) - floor(minDateTs);
+					let split = minMinTs + tzOffset + incrRoundUp(minDateTs - minMinTs, incr0);
+					splits.push(split);
+
+					let date0 = tzDate(split);
+
+					let prevHour = date0.getHours() + (date0.getMinutes() / m) + (date0.getSeconds() / h);
+					let incrHours = foundIncr / h;
+
+					let minSpace = self.axes[axisIdx]._space;
+					let pctSpace = foundSpace / minSpace;
+
+					while (1) {
+						split = roundDec(split + foundIncr, ms == 1 ? 0 : 3);
+
+						if (split > scaleMax)
+							break;
+
+						if (incrHours > 1) {
+							let expectedHour = floor(roundDec(prevHour + incrHours, 6)) % 24;
+							let splitDate = tzDate(split);
+							let actualHour = splitDate.getHours();
+
+							let dstShift = actualHour - expectedHour;
+
+							if (dstShift > 1)
+								dstShift = -1;
+
+							split -= dstShift * h;
+
+							prevHour = (prevHour + incrHours) % 24;
+
+							// add a tick only if it's further than 70% of the min allowed label spacing
+							let prevSplit = splits[splits.length - 1];
+							let pctIncr = roundDec((split - prevSplit) / foundIncr, 3);
+
+							if (pctIncr * pctSpace >= .7)
+								splits.push(split);
+						}
+						else
+							splits.push(split);
+					}
+				}
+
+				return splits;
+			}
+		}
+
+		return [
+			timeIncrs,
+			_timeAxisStamps,
+			timeAxisSplits,
+		];
+	}
+
+	const [ timeIncrsMs, _timeAxisStampsMs, timeAxisSplitsMs ] = genTimeStuffs(1);
+	const [ timeIncrsS,  _timeAxisStampsS,  timeAxisSplitsS  ] = genTimeStuffs(1e-3);
+
+	// base 2
+	genIncrs(2, -53, 53, [1]);
+
+	/*
+	console.log({
+		decIncrs,
+		oneIncrs,
+		wholeIncrs,
+		numIncrs,
+		timeIncrs,
+		fixedDec,
+	});
+	*/
+
+	function timeAxisStamps(stampCfg, fmtDate) {
+		return stampCfg.map(s => s.map((v, i) =>
+			i == 0 || i == 8 || v == null ? v : fmtDate(i == 1 || s[8] == 0 ? v : s[1] + v)
+		));
+	}
+
+	// TODO: will need to accept spaces[] and pull incr into the loop when grid will be non-uniform, eg for log scales.
+	// currently we ignore this for months since they're *nearly* uniform and the added complexity is not worth it
+	function timeAxisVals(tzDate, stamps) {
+		return (self, splits, axisIdx, foundSpace, foundIncr) => {
+			let s = stamps.find(s => foundIncr >= s[0]) || stamps[stamps.length - 1];
+
+			// these track boundaries when a full label is needed again
+			let prevYear;
+			let prevMnth;
+			let prevDate;
+			let prevHour;
+			let prevMins;
+			let prevSecs;
+
+			return splits.map(split => {
+				let date = tzDate(split);
+
+				let newYear = date.getFullYear();
+				let newMnth = date.getMonth();
+				let newDate = date.getDate();
+				let newHour = date.getHours();
+				let newMins = date.getMinutes();
+				let newSecs = date.getSeconds();
+
+				let stamp = (
+					newYear != prevYear && s[2] ||
+					newMnth != prevMnth && s[3] ||
+					newDate != prevDate && s[4] ||
+					newHour != prevHour && s[5] ||
+					newMins != prevMins && s[6] ||
+					newSecs != prevSecs && s[7] ||
+					                       s[1]
+				);
+
+				prevYear = newYear;
+				prevMnth = newMnth;
+				prevDate = newDate;
+				prevHour = newHour;
+				prevMins = newMins;
+				prevSecs = newSecs;
+
+				return stamp(date);
+			});
+		}
+	}
+
+	// for when axis.values is defined as a static fmtDate template string
+	function timeAxisVal(tzDate, dateTpl) {
+		let stamp = fmtDate(dateTpl);
+		return (self, splits, axisIdx, foundSpace, foundIncr) => splits.map(split => stamp(tzDate(split)));
+	}
+
+	function mkDate(y, m, d) {
+		return new Date(y, m, d);
+	}
+
+	function timeSeriesStamp(stampCfg, fmtDate) {
+		return fmtDate(stampCfg);
+	}
+	const _timeSeriesStamp = '{YYYY}-{MM}-{DD} {h}:{mm}{aa}';
+
+	function timeSeriesVal(tzDate, stamp) {
+		return (self, val) => stamp(tzDate(val));
+	}
+
+	function legendStroke(self, seriesIdx) {
+		let s = self.series[seriesIdx];
+		return s.width ? s.stroke(self, seriesIdx) : s.points.width ? s.points.stroke(self, seriesIdx) : null;
+	}
+
+	function legendFill(self, seriesIdx) {
+		return self.series[seriesIdx].fill(self, seriesIdx);
+	}
+
+	const legendOpts = {
+		show: true,
+		live: true,
+		isolate: false,
+		markers: {
+			show: true,
+			width: 2,
+			stroke: legendStroke,
+			fill: legendFill,
+			dash: "solid",
+		},
+		idx: null,
+		idxs: null,
+		values: [],
+	};
+
+	function cursorPointShow(self, si) {
+		let o = self.cursor.points;
+
+		let pt = placeDiv();
+
+		let size = o.size(self, si);
+		setStylePx(pt, WIDTH, size);
+		setStylePx(pt, HEIGHT, size);
+
+		let mar = size / -2;
+		setStylePx(pt, "marginLeft", mar);
+		setStylePx(pt, "marginTop", mar);
+
+		let width = o.width(self, si, size);
+		width && setStylePx(pt, "borderWidth", width);
+
+		return pt;
+	}
+
+	function cursorPointFill(self, si) {
+		let sp = self.series[si].points;
+		return sp._fill || sp._stroke;
+	}
+
+	function cursorPointStroke(self, si) {
+		let sp = self.series[si].points;
+		return sp._stroke || sp._fill;
+	}
+
+	function cursorPointSize(self, si) {
+		let sp = self.series[si].points;
+		return ptDia(sp.width, 1);
+	}
+
+	function dataIdx(self, seriesIdx, cursorIdx) {
+		return cursorIdx;
+	}
+
+	const moveTuple = [0,0];
+
+	function cursorMove(self, mouseLeft1, mouseTop1) {
+		moveTuple[0] = mouseLeft1;
+		moveTuple[1] = mouseTop1;
+		return moveTuple;
+	}
+
+	function filtBtn0(self, targ, handle) {
+		return e => {
+			e.button == 0 && handle(e);
+		};
+	}
+
+	function passThru(self, targ, handle) {
+		return handle;
+	}
+
+	const cursorOpts = {
+		show: true,
+		x: true,
+		y: true,
+		lock: false,
+		move: cursorMove,
+		points: {
+			show:   cursorPointShow,
+			size:   cursorPointSize,
+			width:  0,
+			stroke: cursorPointStroke,
+			fill:   cursorPointFill,
+		},
+
+		bind: {
+			mousedown:   filtBtn0,
+			mouseup:     filtBtn0,
+			click:       filtBtn0,
+			dblclick:    filtBtn0,
+
+			mousemove:   passThru,
+			mouseleave:  passThru,
+			mouseenter:  passThru,
+		},
+
+		drag: {
+			setScale: true,
+			x: true,
+			y: false,
+			dist: 0,
+			uni: null,
+			_x: false,
+			_y: false,
+		},
+
+		focus: {
+			prox: -1,
+		},
+
+		left: -10,
+		top: -10,
+		idx: null,
+		dataIdx,
+		idxs: null,
+	};
+
+	const grid = {
+		show: true,
+		stroke: "rgba(0,0,0,0.07)",
+		width: 2,
+	//	dash: [],
+		filter: retArg1,
+	};
+
+	const ticks = assign({}, grid, {size: 10});
+
+	const font      = '12px system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"';
+	const labelFont = "bold " + font;
+	const lineMult = 1.5;		// font-size multiplier
+
+	const xAxisOpts = {
+		show: true,
+		scale: "x",
+		stroke: hexBlack,
+		space: 50,
+		gap: 5,
+		size: 50,
+		labelGap: 0,
+		labelSize: 30,
+		labelFont,
+		side: 2,
+	//	class: "x-vals",
+	//	incrs: timeIncrs,
+	//	values: timeVals,
+	//	filter: retArg1,
+		grid,
+		ticks,
+		font,
+		rotate: 0,
+	};
+
+	const numSeriesLabel = "Value";
+	const timeSeriesLabel = "Time";
+
+	const xSeriesOpts = {
+		show: true,
+		scale: "x",
+		auto: false,
+		sorted: 1,
+	//	label: "Time",
+	//	value: v => stamp(new Date(v * 1e3)),
+
+		// internal caches
+		min: inf,
+		max: -inf,
+		idxs: [],
+	};
+
+	function numAxisVals(self, splits, axisIdx, foundSpace, foundIncr) {
+		return splits.map(v => v == null ? "" : fmtNum(v));
+	}
+
+	function numAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+		let splits = [];
+
+		let numDec = fixedDec.get(foundIncr) || 0;
+
+		scaleMin = forceMin ? scaleMin : roundDec(incrRoundUp(scaleMin, foundIncr), numDec);
+
+		for (let val = scaleMin; val <= scaleMax; val = roundDec(val + foundIncr, numDec))
+			splits.push(Object.is(val, -0) ? 0 : val);		// coalesces -0
+
+		return splits;
+	}
+
+	// this doesnt work for sin, which needs to come off from 0 independently in pos and neg dirs
+	function logAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+		const splits = [];
+
+		const logBase = self.scales[self.axes[axisIdx].scale].log;
+
+		const logFn = logBase == 10 ? log10 : log2;
+
+		const exp = floor(logFn(scaleMin));
+
+		foundIncr = pow(logBase, exp);
+
+		if (exp < 0)
+			foundIncr = roundDec(foundIncr, -exp);
+
+		let split = scaleMin;
+
+		do {
+			splits.push(split);
+			split = roundDec(split + foundIncr, fixedDec.get(foundIncr));
+
+			if (split >= foundIncr * logBase)
+				foundIncr = split;
+
+		} while (split <= scaleMax);
+
+		return splits;
+	}
+
+	function asinhAxisSplits(self, axisIdx, scaleMin, scaleMax, foundIncr, foundSpace, forceMin) {
+		let sc = self.scales[self.axes[axisIdx].scale];
+
+		let linthresh = sc.asinh;
+
+		let posSplits = scaleMax > linthresh ? logAxisSplits(self, axisIdx, max(linthresh, scaleMin), scaleMax, foundIncr) : [linthresh];
+		let zero = scaleMax >= 0 && scaleMin <= 0 ? [0] : [];
+		let negSplits = scaleMin < -linthresh ? logAxisSplits(self, axisIdx, max(linthresh, -scaleMax), -scaleMin, foundIncr): [linthresh];
+
+		return negSplits.reverse().map(v => -v).concat(zero, posSplits);
+	}
+
+	const RE_ALL   = /./;
+	const RE_12357 = /[12357]/;
+	const RE_125   = /[125]/;
+	const RE_1     = /1/;
+
+	function logAxisValsFilt(self, splits, axisIdx, foundSpace, foundIncr) {
+		let axis = self.axes[axisIdx];
+		let scaleKey = axis.scale;
+		let sc = self.scales[scaleKey];
+
+		if (sc.distr == 3 && sc.log == 2)
+			return splits;
+
+		let valToPos = self.valToPos;
+
+		let minSpace = axis._space;
+
+		let _10 = valToPos(10, scaleKey);
+
+		let re = (
+			valToPos(9, scaleKey) - _10 >= minSpace ? RE_ALL :
+			valToPos(7, scaleKey) - _10 >= minSpace ? RE_12357 :
+			valToPos(5, scaleKey) - _10 >= minSpace ? RE_125 :
+			RE_1
+		);
+
+		return splits.map(v => ((sc.distr == 4 && v == 0) || re.test(v)) ? v : null);
+	}
+
+	function numSeriesVal(self, val) {
+		return val == null ? "" : fmtNum(val);
+	}
+
+	const yAxisOpts = {
+		show: true,
+		scale: "y",
+		stroke: hexBlack,
+		space: 30,
+		gap: 5,
+		size: 50,
+		labelGap: 0,
+		labelSize: 30,
+		labelFont,
+		side: 3,
+	//	class: "y-vals",
+	//	incrs: numIncrs,
+	//	values: (vals, space) => vals,
+	//	filter: retArg1,
+		grid,
+		ticks,
+		font,
+		rotate: 0,
+	};
+
+	// takes stroke width
+	function ptDia(width, mult) {
+		let dia = 3 + (width || 1) * 2;
+		return roundDec(dia * mult, 3);
+	}
+
+	function seriesPointsShow(self, si) {
+		let { scale, idxs } = self.series[0];
+		let xData = self._data[0];
+		let p0 = self.valToPos(xData[idxs[0]], scale, true);
+		let p1 = self.valToPos(xData[idxs[1]], scale, true);
+		let dim = abs(p1 - p0);
+
+		let s = self.series[si];
+	//	const dia = ptDia(s.width, pxRatio);
+		let maxPts = dim / (s.points.space * pxRatio);
+		return idxs[1] - idxs[0] <= maxPts;
+	}
+
+	function seriesFillTo(self, seriesIdx, dataMin, dataMax) {
+		let scale = self.scales[self.series[seriesIdx].scale];
+		let isUpperBandEdge = self.bands && self.bands.some(b => b.series[0] == seriesIdx);
+		return scale.distr == 3 || isUpperBandEdge ? scale.min : 0;
+	}
+
+	const facet = {
+		scale: null,
+		auto: true,
+
+		// internal caches
+		min: inf,
+		max: -inf,
+	};
+
+	const xySeriesOpts = {
+		show: true,
+		auto: true,
+		sorted: 0,
+		alpha: 1,
+		facets: [
+			assign({}, facet, {scale: 'x'}),
+			assign({}, facet, {scale: 'y'}),
+		],
+	};
+
+	const ySeriesOpts = {
+		scale: "y",
+		auto: true,
+		sorted: 0,
+		show: true,
+		spanGaps: false,
+		gaps: (self, seriesIdx, idx0, idx1, nullGaps) => nullGaps,
+		alpha: 1,
+		points: {
+			show: seriesPointsShow,
+			filter: null,
+		//  paths:
+		//	stroke: "#000",
+		//	fill: "#fff",
+		//	width: 1,
+		//	size: 10,
+		},
+	//	label: "Value",
+	//	value: v => v,
+		values: null,
+
+		// internal caches
+		min: inf,
+		max: -inf,
+		idxs: [],
+
+		path: null,
+		clip: null,
+	};
+
+	function clampScale(self, val, scaleMin, scaleMax, scaleKey) {
+	/*
+		if (val < 0) {
+			let cssHgt = self.bbox.height / pxRatio;
+			let absPos = self.valToPos(abs(val), scaleKey);
+			let fromBtm = cssHgt - absPos;
+			return self.posToVal(cssHgt + fromBtm, scaleKey);
+		}
+	*/
+		return scaleMin / 10;
+	}
+
+	const xScaleOpts = {
+		time: FEAT_TIME,
+		auto: true,
+		distr: 1,
+		log: 10,
+		asinh: 1,
+		min: null,
+		max: null,
+		dir: 1,
+		ori: 0,
+	};
+
+	const yScaleOpts = assign({}, xScaleOpts, {
+		time: false,
+		ori: 1,
+	});
+
+	const syncs = {};
+
+	function _sync(key, opts) {
+		let s = syncs[key];
+
+		if (!s) {
+			s = {
+				key,
+				plots: [],
+				sub(plot) {
+					s.plots.push(plot);
+				},
+				unsub(plot) {
+					s.plots = s.plots.filter(c => c != plot);
+				},
+				pub(type, self, x, y, w, h, i) {
+					for (let j = 0; j < s.plots.length; j++)
+						s.plots[j] != self && s.plots[j].pub(type, self, x, y, w, h, i);
+				},
+			};
+
+			if (key != null)
+				syncs[key] = s;
+		}
+
+		return s;
+	}
+
+	const BAND_CLIP_FILL   = 1 << 0;
+	const BAND_CLIP_STROKE = 1 << 1;
+
+	function orient(u, seriesIdx, cb) {
+		const series = u.series[seriesIdx];
+		const scales = u.scales;
+		const bbox   = u.bbox;
+		const scaleX = u.mode == 2 ? scales[series.facets[0].scale] : scales[u.series[0].scale];
+
+		let dx = u._data[0],
+			dy = u._data[seriesIdx],
+			sx = scaleX,
+			sy = u.mode == 2 ? scales[series.facets[1].scale] : scales[series.scale],
+			l = bbox.left,
+			t = bbox.top,
+			w = bbox.width,
+			h = bbox.height,
+			H = u.valToPosH,
+			V = u.valToPosV;
+
+		return (sx.ori == 0
+			? cb(
+				series,
+				dx,
+				dy,
+				sx,
+				sy,
+				H,
+				V,
+				l,
+				t,
+				w,
+				h,
+				moveToH,
+				lineToH,
+				rectH,
+				arcH,
+				bezierCurveToH,
+			)
+			: cb(
+				series,
+				dx,
+				dy,
+				sx,
+				sy,
+				V,
+				H,
+				t,
+				l,
+				h,
+				w,
+				moveToV,
+				lineToV,
+				rectV,
+				arcV,
+				bezierCurveToV,
+			)
+		);
+	}
+
+	// creates inverted band clip path (towards from stroke path -> yMax)
+	function clipBandLine(self, seriesIdx, idx0, idx1, strokePath) {
+		return orient(self, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+			let pxRound = series.pxRound;
+
+			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+			const lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+			let frIdx, toIdx;
+
+			if (dir == 1) {
+				frIdx = idx0;
+				toIdx = idx1;
+			}
+			else {
+				frIdx = idx1;
+				toIdx = idx0;
+			}
+
+			// path start
+			let x0 = pxRound(valToPosX(dataX[frIdx], scaleX, xDim, xOff));
+			let y0 = pxRound(valToPosY(dataY[frIdx], scaleY, yDim, yOff));
+			// path end x
+			let x1 = pxRound(valToPosX(dataX[toIdx], scaleX, xDim, xOff));
+			// upper y limit
+			let yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+
+			let clip = new Path2D(strokePath);
+
+			lineTo(clip, x1, yLimit);
+			lineTo(clip, x0, yLimit);
+			lineTo(clip, x0, y0);
+
+			return clip;
+		});
+	}
+
+	function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
+		let clip = null;
+
+		// create clip path (invert gaps and non-gaps)
+		if (gaps.length > 0) {
+			clip = new Path2D();
+
+			const rect = ori == 0 ? rectH : rectV;
+
+			let prevGapEnd = plotLft;
+
+			for (let i = 0; i < gaps.length; i++) {
+				let g = gaps[i];
+
+				if (g[1] > g[0]) {
+					let w = g[0] - prevGapEnd;
+
+					w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+
+					prevGapEnd = g[1];
+				}
+			}
+
+			let w = plotLft + plotWid - prevGapEnd;
+
+			w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
+		}
+
+		return clip;
+	}
+
+	function addGap(gaps, fromX, toX) {
+		let prevGap = gaps[gaps.length - 1];
+
+		if (prevGap && prevGap[0] == fromX)			// TODO: gaps must be encoded at stroke widths?
+			prevGap[1] = toX;
+		else
+			gaps.push([fromX, toX]);
+	}
+
+	function pxRoundGen(pxAlign) {
+		return pxAlign == 0 ? retArg0 : pxAlign == 1 ? round : v => incrRound(v, pxAlign);
+	}
+
+	function rect(ori) {
+		let moveTo = ori == 0 ?
+			moveToH :
+			moveToV;
+
+		let arcTo = ori == 0 ?
+			(p, x1, y1, x2, y2, r) => { p.arcTo(x1, y1, x2, y2, r); } :
+			(p, y1, x1, y2, x2, r) => { p.arcTo(x1, y1, x2, y2, r); };
+
+		let rect = ori == 0 ?
+			(p, x, y, w, h) => { p.rect(x, y, w, h); } :
+			(p, y, x, h, w) => { p.rect(x, y, w, h); };
+
+		return (p, x, y, w, h, r = 0) => {
+			if (r == 0)
+				rect(p, x, y, w, h);
+			else {
+				r = min(r, w / 2, h / 2);
+
+				// adapted from https://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-using-html-canvas/7838871#7838871
+				moveTo(p, x + r, y);
+				arcTo(p, x + w, y, x + w, y + h, r);
+				arcTo(p, x + w, y + h, x, y + h, r);
+				arcTo(p, x, y + h, x, y, r);
+				arcTo(p, x, y, x + w, y, r);
+				p.closePath();
+			}
+		};
+	}
+
+	// orientation-inverting canvas functions
+	const moveToH = (p, x, y) => { p.moveTo(x, y); };
+	const moveToV = (p, y, x) => { p.moveTo(x, y); };
+	const lineToH = (p, x, y) => { p.lineTo(x, y); };
+	const lineToV = (p, y, x) => { p.lineTo(x, y); };
+	const rectH = rect(0);
+	const rectV = rect(1);
+	const arcH = (p, x, y, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+	const arcV = (p, y, x, r, startAngle, endAngle) => { p.arc(x, y, r, startAngle, endAngle); };
+	const bezierCurveToH = (p, bp1x, bp1y, bp2x, bp2y, p2x, p2y) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+	const bezierCurveToV = (p, bp1y, bp1x, bp2y, bp2x, p2y, p2x) => { p.bezierCurveTo(bp1x, bp1y, bp2x, bp2y, p2x, p2y); };
+
+	// TODO: drawWrap(seriesIdx, drawPoints) (save, restore, translate, clip)
+	function points(opts) {
+		return (u, seriesIdx, idx0, idx1, filtIdxs) => {
+		//	log("drawPoints()", arguments);
+
+			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+				let { pxRound, points } = series;
+
+				let moveTo, arc;
+
+				if (scaleX.ori == 0) {
+					moveTo = moveToH;
+					arc = arcH;
+				}
+				else {
+					moveTo = moveToV;
+					arc = arcV;
+				}
+
+				const width = roundDec(points.width * pxRatio, 3);
+
+				let rad = (points.size - points.width) / 2 * pxRatio;
+				let dia = roundDec(rad * 2, 3);
+
+				let fill = new Path2D();
+				let clip = new Path2D();
+
+				let { left: lft, top: top, width: wid, height: hgt } = u.bbox;
+
+				rectH(clip,
+					lft - dia,
+					top - dia,
+					wid + dia * 2,
+					hgt + dia * 2,
+				);
+
+				const drawPoint = pi => {
+					if (dataY[pi] != null) {
+						let x = pxRound(valToPosX(dataX[pi], scaleX, xDim, xOff));
+						let y = pxRound(valToPosY(dataY[pi], scaleY, yDim, yOff));
+
+						moveTo(fill, x + rad, y);
+						arc(fill, x, y, rad, 0, PI * 2);
+					}
+				};
+
+				if (filtIdxs)
+					filtIdxs.forEach(drawPoint);
+				else {
+					for (let pi = idx0; pi <= idx1; pi++)
+						drawPoint(pi);
+				}
+
+				return {
+					stroke: width > 0 ? fill : null,
+					fill,
+					clip,
+					flags: BAND_CLIP_FILL | BAND_CLIP_STROKE,
+				};
+			});
+		};
+	}
+
+	function _drawAcc(lineTo) {
+		return (stroke, accX, minY, maxY, inY, outY) => {
+			if (minY != maxY) {
+				if (inY != minY && outY != minY)
+					lineTo(stroke, accX, minY);
+				if (inY != maxY && outY != maxY)
+					lineTo(stroke, accX, maxY);
+
+				lineTo(stroke, accX, outY);
+			}
+		};
+	}
+
+	const drawAccH = _drawAcc(lineToH);
+	const drawAccV = _drawAcc(lineToV);
+
+	function linear() {
+		return (u, seriesIdx, idx0, idx1) => {
+			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+				let pxRound = series.pxRound;
+
+				let lineTo, drawAcc;
+
+				if (scaleX.ori == 0) {
+					lineTo = lineToH;
+					drawAcc = drawAccH;
+				}
+				else {
+					lineTo = lineToV;
+					drawAcc = drawAccV;
+				}
+
+				const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+				const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+				const stroke = _paths.stroke;
+
+				let minY = inf,
+					maxY = -inf,
+					inY, outY, outX, drawnAtX;
+
+				let gaps = [];
+
+				let accX = pxRound(valToPosX(dataX[dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+				let accGaps = false;
+				let prevYNull = false;
+
+				// data edges
+				let lftIdx = nonNullIdx(dataY, idx0, idx1,  1 * dir);
+				let rgtIdx = nonNullIdx(dataY, idx0, idx1, -1 * dir);
+				let lftX =  pxRound(valToPosX(dataX[lftIdx], scaleX, xDim, xOff));
+				let rgtX =  pxRound(valToPosX(dataX[rgtIdx], scaleX, xDim, xOff));
+
+				if (lftX > xOff)
+					addGap(gaps, xOff, lftX);
+
+				for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+					let x = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+					if (x == accX) {
+						if (dataY[i] != null) {
+							outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+
+							if (minY == inf) {
+								lineTo(stroke, x, outY);
+								inY = outY;
+							}
+
+							minY = min(outY, minY);
+							maxY = max(outY, maxY);
+						}
+						else if (dataY[i] === null)
+							accGaps = prevYNull = true;
+					}
+					else {
+						let _addGap = false;
+
+						if (minY != inf) {
+							drawAcc(stroke, accX, minY, maxY, inY, outY);
+							outX = drawnAtX = accX;
+						}
+						else if (accGaps) {
+							_addGap = true;
+							accGaps = false;
+						}
+
+						if (dataY[i] != null) {
+							outY = pxRound(valToPosY(dataY[i], scaleY, yDim, yOff));
+							lineTo(stroke, x, outY);
+							minY = maxY = inY = outY;
+
+							// prior pixel can have data but still start a gap if ends with null
+							if (prevYNull && x - accX > 1)
+								_addGap = true;
+
+							prevYNull = false;
+						}
+						else {
+							minY = inf;
+							maxY = -inf;
+
+							if (dataY[i] === null) {
+								accGaps = true;
+
+								if (x - accX > 1)
+									_addGap = true;
+							}
+						}
+
+						_addGap && addGap(gaps, outX, x);
+
+						accX = x;
+					}
+				}
+
+				if (minY != inf && minY != maxY && drawnAtX != accX)
+					drawAcc(stroke, accX, minY, maxY, inY, outY);
+
+				if (rgtX < xOff + xDim)
+					addGap(gaps, rgtX, xOff + xDim);
+
+				if (series.fill != null) {
+					let fill = _paths.fill = new Path2D(stroke);
+
+					let fillTo = pxRound(valToPosY(series.fillTo(u, seriesIdx, series.min, series.max), scaleY, yDim, yOff));
+
+					lineTo(fill, rgtX, fillTo);
+					lineTo(fill, lftX, fillTo);
+				}
+
+				_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+				if (!series.spanGaps)
+					_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+				if (u.bands.length > 0) {
+					// ADDL OPT: only create band clips for series that are band lower edges
+					// if (b.series[1] == i && _paths.band == null)
+					_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+				}
+
+				return _paths;
+			});
+		};
+	}
+
+	function stepped(opts) {
+		const align = ifNull(opts.align, 1);
+		// whether to draw ascenders/descenders at null/gap bondaries
+		const ascDesc = ifNull(opts.ascDesc, false);
+
+		return (u, seriesIdx, idx0, idx1) => {
+			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+				let pxRound = series.pxRound;
+
+				let lineTo = scaleX.ori == 0 ? lineToH : lineToV;
+
+				const _paths = {stroke: new Path2D(), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+				const stroke = _paths.stroke;
+
+				const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+				idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+				idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+				let gaps = [];
+				let inGap = false;
+				let prevYPos  = pxRound(valToPosY(dataY[_dir == 1 ? idx0 : idx1], scaleY, yDim, yOff));
+				let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+				let prevXPos = firstXPos;
+
+				lineTo(stroke, firstXPos, prevYPos);
+
+				for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+					let yVal1 = dataY[i];
+
+					let x1 = pxRound(valToPosX(dataX[i], scaleX, xDim, xOff));
+
+					if (yVal1 == null) {
+						if (yVal1 === null) {
+							addGap(gaps, prevXPos, x1);
+							inGap = true;
+						}
+						continue;
+					}
+
+					let y1 = pxRound(valToPosY(yVal1, scaleY, yDim, yOff));
+
+					if (inGap) {
+						addGap(gaps, prevXPos, x1);
+						inGap = false;
+					}
+
+					if (align == 1)
+						lineTo(stroke, x1, prevYPos);
+					else
+						lineTo(stroke, prevXPos, y1);
+
+					lineTo(stroke, x1, y1);
+
+					prevYPos = y1;
+					prevXPos = x1;
+				}
+
+				if (series.fill != null) {
+					let fill = _paths.fill = new Path2D(stroke);
+
+					let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+					let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+					lineTo(fill, prevXPos, minY);
+					lineTo(fill, firstXPos, minY);
+				}
+
+				_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+				// expand/contract clips for ascenders/descenders
+				let halfStroke = (series.width * pxRatio) / 2;
+				let startsOffset = (ascDesc || align ==  1) ?  halfStroke : -halfStroke;
+				let endsOffset   = (ascDesc || align == -1) ? -halfStroke :  halfStroke;
+
+				gaps.forEach(g => {
+					g[0] += startsOffset;
+					g[1] += endsOffset;
+				});
+
+				if (!series.spanGaps)
+					_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+				if (u.bands.length > 0) {
+					// ADDL OPT: only create band clips for series that are band lower edges
+					// if (b.series[1] == i && _paths.band == null)
+					_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+				}
+
+				return _paths;
+			});
+		};
+	}
+
+	function bars(opts) {
+		opts = opts || EMPTY_OBJ;
+		const size = ifNull(opts.size, [0.6, inf, 1]);
+		const align = opts.align || 0;
+		const extraGap = (opts.gap || 0) * pxRatio;
+
+		const radius = ifNull(opts.radius, 0);
+
+		const gapFactor = 1 - size[0];
+		const maxWidth  = ifNull(size[1], inf) * pxRatio;
+		const minWidth  = ifNull(size[2], 1) * pxRatio;
+
+		const disp = ifNull(opts.disp, EMPTY_OBJ);
+		const _each = ifNull(opts.each, _ => {});
+
+		const { fill: dispFills, stroke: dispStrokes } = disp;
+
+		return (u, seriesIdx, idx0, idx1) => {
+			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+				let pxRound = series.pxRound;
+
+				const _dirX = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+				const _dirY = scaleY.dir * (scaleY.ori == 1 ? 1 : -1);
+
+				let rect = scaleX.ori == 0 ? rectH : rectV;
+
+				let each = scaleX.ori == 0 ? _each : (u, seriesIdx, i, top, lft, hgt, wid) => {
+					_each(u, seriesIdx, i, lft, top, wid, hgt);
+				};
+
+				let fillToY = series.fillTo(u, seriesIdx, series.min, series.max);
+
+				let y0Pos = valToPosY(fillToY, scaleY, yDim, yOff);
+
+				// barWid is to center of stroke
+				let xShift, barWid;
+
+				let strokeWidth = pxRound(series.width * pxRatio);
+
+				let multiPath = false;
+
+				let fillColors = null;
+				let fillPaths = null;
+				let strokeColors = null;
+				let strokePaths = null;
+
+				if (dispFills != null && dispStrokes != null) {
+					multiPath = true;
+
+					fillColors = dispFills.values(u, seriesIdx, idx0, idx1);
+					fillPaths = new Map();
+					(new Set(fillColors)).forEach(color => {
+						if (color != null)
+							fillPaths.set(color, new Path2D());
+					});
+
+					strokeColors = dispStrokes.values(u, seriesIdx, idx0, idx1);
+					strokePaths = new Map();
+					(new Set(strokeColors)).forEach(color => {
+						if (color != null)
+							strokePaths.set(color, new Path2D());
+					});
+				}
+
+				let { x0, size } = disp;
+
+				if (x0 != null && size != null) {
+					dataX = x0.values(u, seriesIdx, idx0, idx1);
+
+					if (x0.unit == 2)
+						dataX = dataX.map(pct => u.posToVal(xOff + pct * xDim, scaleX.key, true));
+
+					// assumes uniform sizes, for now
+					let sizes = size.values(u, seriesIdx, idx0, idx1);
+
+					if (size.unit == 2)
+						barWid = sizes[0] * xDim;
+					else
+						barWid = valToPosX(sizes[0], scaleX, xDim, xOff) - valToPosX(0, scaleX, xDim, xOff); // assumes linear scale (delta from 0)
+
+					barWid = pxRound(barWid - strokeWidth);
+
+					xShift = (_dirX == 1 ? -strokeWidth / 2 : barWid + strokeWidth / 2);
+				}
+				else {
+					let colWid = xDim;
+
+					if (dataX.length > 1) {
+						// prior index with non-undefined y data
+						let prevIdx = null;
+
+						// scan full dataset for smallest adjacent delta
+						// will not work properly for non-linear x scales, since does not do expensive valToPosX calcs till end
+						for (let i = 0, minDelta = Infinity; i < dataX.length; i++) {
+							if (dataY[i] !== undefined) {
+								if (prevIdx != null) {
+									let delta = abs(dataX[i] - dataX[prevIdx]);
+
+									if (delta < minDelta) {
+										minDelta = delta;
+										colWid = abs(valToPosX(dataX[i], scaleX, xDim, xOff) - valToPosX(dataX[prevIdx], scaleX, xDim, xOff));
+									}
+								}
+
+								prevIdx = i;
+							}
+						}
+					}
+
+					let gapWid = colWid * gapFactor;
+
+					barWid = pxRound(min(maxWidth, max(minWidth, colWid - gapWid)) - strokeWidth - extraGap);
+
+					xShift = (align == 0 ? barWid / 2 : align == _dirX ? 0 : barWid) - align * _dirX * extraGap / 2;
+				}
+
+				const _paths = {stroke: null, fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL | BAND_CLIP_STROKE};  // disp, geom
+
+				const hasBands = u.bands.length > 0;
+				let yLimit;
+
+				if (hasBands) {
+					// ADDL OPT: only create band clips for series that are band lower edges
+					// if (b.series[1] == i && _paths.band == null)
+					_paths.band = new Path2D();
+					yLimit = pxRound(valToPosY(scaleY.max, scaleY, yDim, yOff));
+				}
+
+				const stroke = multiPath ? null : new Path2D();
+				const band = _paths.band;
+
+				for (let i = _dirX == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dirX) {
+					let yVal = dataY[i];
+
+				/*
+					// interpolate upwards band clips
+					if (yVal == null) {
+					//	if (hasBands)
+					//		yVal = costlyLerp(i, idx0, idx1, _dirX, dataY);
+					//	else
+							continue;
+					}
+				*/
+
+					let xVal = scaleX.distr != 2 || disp != null ? dataX[i] : i;
+
+					// TODO: all xPos can be pre-computed once for all series in aligned set
+					let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+					let yPos = valToPosY(ifNull(yVal, fillToY) , scaleY, yDim, yOff);
+
+					let lft = pxRound(xPos - xShift);
+					let btm = pxRound(max(yPos, y0Pos));
+					let top = pxRound(min(yPos, y0Pos));
+					// this includes the stroke
+					let barHgt = btm - top;
+
+					let r = radius * barWid;
+
+					if (yVal != null) {  // && yVal != fillToY (0 height bar)
+						if (multiPath) {
+							if (strokeWidth > 0 && strokeColors[i] != null)
+								rect(strokePaths.get(strokeColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+							if (fillColors[i] != null)
+								rect(fillPaths.get(fillColors[i]), lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+						}
+						else
+							rect(stroke, lft, top + floor(strokeWidth / 2), barWid, max(0, barHgt - strokeWidth), r);
+
+						each(u, seriesIdx, i,
+							lft    - strokeWidth / 2,
+							top,
+							barWid + strokeWidth,
+							barHgt,
+						);
+					}
+
+					if (hasBands) {
+						if (_dirY == 1) {
+							btm = top;
+							top = yLimit;
+						}
+						else {
+							top = btm;
+							btm = yLimit;
+						}
+
+						barHgt = btm - top;
+
+						rect(band, lft - strokeWidth / 2, top, barWid + strokeWidth, max(0, barHgt), 0);
+					}
+				}
+
+				if (strokeWidth > 0)
+					_paths.stroke = multiPath ? strokePaths : stroke;
+
+				_paths.fill = multiPath ? fillPaths : stroke;
+
+				return _paths;
+			});
+		};
+	}
+
+	function splineInterp(interp, opts) {
+		return (u, seriesIdx, idx0, idx1) => {
+			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
+				let pxRound = series.pxRound;
+
+				let moveTo, bezierCurveTo, lineTo;
+
+				if (scaleX.ori == 0) {
+					moveTo = moveToH;
+					lineTo = lineToH;
+					bezierCurveTo = bezierCurveToH;
+				}
+				else {
+					moveTo = moveToV;
+					lineTo = lineToV;
+					bezierCurveTo = bezierCurveToV;
+				}
+
+				const _dir = 1 * scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
+
+				idx0 = nonNullIdx(dataY, idx0, idx1,  1);
+				idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+
+				let gaps = [];
+				let inGap = false;
+				let firstXPos = pxRound(valToPosX(dataX[_dir == 1 ? idx0 : idx1], scaleX, xDim, xOff));
+				let prevXPos = firstXPos;
+
+				let xCoords = [];
+				let yCoords = [];
+
+				for (let i = _dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += _dir) {
+					let yVal = dataY[i];
+					let xVal = dataX[i];
+					let xPos = valToPosX(xVal, scaleX, xDim, xOff);
+
+					if (yVal == null) {
+						if (yVal === null) {
+							addGap(gaps, prevXPos, xPos);
+							inGap = true;
+						}
+						continue;
+					}
+					else {
+						if (inGap) {
+							addGap(gaps, prevXPos, xPos);
+							inGap = false;
+						}
+
+						xCoords.push((prevXPos = xPos));
+						yCoords.push(valToPosY(dataY[i], scaleY, yDim, yOff));
+					}
+				}
+
+				const _paths = {stroke: interp(xCoords, yCoords, moveTo, lineTo, bezierCurveTo, pxRound), fill: null, clip: null, band: null, gaps: null, flags: BAND_CLIP_FILL};
+				const stroke = _paths.stroke;
+
+				if (series.fill != null && stroke != null) {
+					let fill = _paths.fill = new Path2D(stroke);
+
+					let fillTo = series.fillTo(u, seriesIdx, series.min, series.max);
+					let minY = pxRound(valToPosY(fillTo, scaleY, yDim, yOff));
+
+					lineTo(fill, prevXPos, minY);
+					lineTo(fill, firstXPos, minY);
+				}
+
+				_paths.gaps = gaps = series.gaps(u, seriesIdx, idx0, idx1, gaps);
+
+				if (!series.spanGaps)
+					_paths.clip = clipGaps(gaps, scaleX.ori, xOff, yOff, xDim, yDim);
+
+				if (u.bands.length > 0) {
+					// ADDL OPT: only create band clips for series that are band lower edges
+					// if (b.series[1] == i && _paths.band == null)
+					_paths.band = clipBandLine(u, seriesIdx, idx0, idx1, stroke);
+				}
+
+				return _paths;
+
+				//  if FEAT_PATHS: false in rollup.config.js
+				//	u.ctx.save();
+				//	u.ctx.beginPath();
+				//	u.ctx.rect(u.bbox.left, u.bbox.top, u.bbox.width, u.bbox.height);
+				//	u.ctx.clip();
+				//	u.ctx.strokeStyle = u.series[sidx].stroke;
+				//	u.ctx.stroke(stroke);
+				//	u.ctx.fillStyle = u.series[sidx].fill;
+				//	u.ctx.fill(fill);
+				//	u.ctx.restore();
+				//	return null;
+			});
+		};
+	}
+
+	function monotoneCubic(opts) {
+		return splineInterp(_monotoneCubic);
+	}
+
+	// Monotone Cubic Spline interpolation, adapted from the Chartist.js implementation:
+	// https://github.com/gionkunz/chartist-js/blob/e7e78201bffe9609915e5e53cfafa29a5d6c49f9/src/scripts/interpolation.js#L240-L369
+	function _monotoneCubic(xs, ys, moveTo, lineTo, bezierCurveTo, pxRound) {
+		const n = xs.length;
+
+		if (n < 2)
+			return null;
+
+		const path = new Path2D();
+
+		moveTo(path, xs[0], ys[0]);
+
+		if (n == 2)
+			lineTo(path, xs[1], ys[1]);
+		else {
+			let ms  = Array(n),
+				ds  = Array(n - 1),
+				dys = Array(n - 1),
+				dxs = Array(n - 1);
+
+			// calc deltas and derivative
+			for (let i = 0; i < n - 1; i++) {
+				dys[i] = ys[i + 1] - ys[i];
+				dxs[i] = xs[i + 1] - xs[i];
+				ds[i]  = dys[i] / dxs[i];
+			}
+
+			// determine desired slope (m) at each point using Fritsch-Carlson method
+			// http://math.stackexchange.com/questions/45218/implementation-of-monotone-cubic-interpolation
+			ms[0] = ds[0];
+
+			for (let i = 1; i < n - 1; i++) {
+				if (ds[i] === 0 || ds[i - 1] === 0 || (ds[i - 1] > 0) !== (ds[i] > 0))
+					ms[i] = 0;
+				else {
+					ms[i] = 3 * (dxs[i - 1] + dxs[i]) / (
+						(2 * dxs[i] + dxs[i - 1]) / ds[i - 1] +
+						(dxs[i] + 2 * dxs[i - 1]) / ds[i]
+					);
+
+					if (!isFinite(ms[i]))
+						ms[i] = 0;
+				}
+			}
+
+			ms[n - 1] = ds[n - 2];
+
+			for (let i = 0; i < n - 1; i++) {
+				bezierCurveTo(
+					path,
+					xs[i] + dxs[i] / 3,
+					ys[i] + ms[i] * dxs[i] / 3,
+					xs[i + 1] - dxs[i] / 3,
+					ys[i + 1] - ms[i + 1] * dxs[i] / 3,
+					xs[i + 1],
+					ys[i + 1],
+				);
+			}
+		}
+
+		return path;
+	}
+
+	const cursorPlots = new Set();
+
+	function invalidateRects() {
+		cursorPlots.forEach(u => {
+			u.syncRect(true);
+		});
+	}
+
+	on(resize, win, invalidateRects);
+	on(scroll, win, invalidateRects, true);
+
+	const linearPath = linear() ;
+	const pointsPath = points() ;
+
+	function setDefaults(d, xo, yo, initY) {
+		let d2 = initY ? [d[0], d[1]].concat(d.slice(2)) : [d[0]].concat(d.slice(1));
+		return d2.map((o, i) => setDefault(o, i, xo, yo));
+	}
+
+	function setDefaults2(d, xyo) {
+		return d.map((o, i) => i == 0 ? null : assign({}, xyo, o));  // todo: assign() will not merge facet arrays
+	}
+
+	function setDefault(o, i, xo, yo) {
+		return assign({}, (i == 0 ? xo : yo), o);
+	}
+
+	function snapNumX(self, dataMin, dataMax) {
+		return dataMin == null ? nullNullTuple : [dataMin, dataMax];
+	}
+
+	const snapTimeX = snapNumX;
+
+	// this ensures that non-temporal/numeric y-axes get multiple-snapped padding added above/below
+	// TODO: also account for incrs when snapping to ensure top of axis gets a tick & value
+	function snapNumY(self, dataMin, dataMax) {
+		return dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, rangePad, true);
+	}
+
+	function snapLogY(self, dataMin, dataMax, scale) {
+		return dataMin == null ? nullNullTuple : rangeLog(dataMin, dataMax, self.scales[scale].log, false);
+	}
+
+	const snapLogX = snapLogY;
+
+	function snapAsinhY(self, dataMin, dataMax, scale) {
+		return dataMin == null ? nullNullTuple : rangeAsinh(dataMin, dataMax, self.scales[scale].log, false);
+	}
+
+	const snapAsinhX = snapAsinhY;
+
+	// dim is logical (getClientBoundingRect) pixels, not canvas pixels
+	function findIncr(minVal, maxVal, incrs, dim, minSpace) {
+		let intDigits = max(numIntDigits(minVal), numIntDigits(maxVal));
+
+		let delta = maxVal - minVal;
+
+		let incrIdx = closestIdx((minSpace / dim) * delta, incrs);
+
+		do {
+			let foundIncr = incrs[incrIdx];
+			let foundSpace = dim * foundIncr / delta;
+
+			if (foundSpace >= minSpace && intDigits + (foundIncr < 5 ? fixedDec.get(foundIncr) : 0) <= 17)
+				return [foundIncr, foundSpace];
+		} while (++incrIdx < incrs.length);
+
+		return [0, 0];
+	}
+
+	function pxRatioFont(font) {
+		let fontSize, fontSizeCss;
+		font = font.replace(/(\d+)px/, (m, p1) => (fontSize = round((fontSizeCss = +p1) * pxRatio)) + 'px');
+		return [font, fontSize, fontSizeCss];
+	}
+
+	function syncFontSize(axis) {
+		if (axis.show) {
+			[axis.font, axis.labelFont].forEach(f => {
+				let size = roundDec(f[2] * pxRatio, 1);
+				f[0] = f[0].replace(/[0-9.]+px/, size + 'px');
+				f[1] = size;
+			});
+		}
+	}
+
+	function uPlot(opts, data, then) {
+		const self = {
+			mode: ifNull(opts.mode, 1),
+		};
+
+		const mode = self.mode;
+
+		// TODO: cache denoms & mins scale.cache = {r, min, }
+		function getValPct(val, scale) {
+			let _val = (
+				scale.distr == 3 ? log10(val > 0 ? val : scale.clamp(self, val, scale.min, scale.max, scale.key)) :
+				scale.distr == 4 ? asinh(val, scale.asinh) :
+				val
+			);
+
+			return (_val - scale._min) / (scale._max - scale._min);
+		}
+
+		function getHPos(val, scale, dim, off) {
+			let pct = getValPct(val, scale);
+			return off + dim * (scale.dir == -1 ? (1 - pct) : pct);
+		}
+
+		function getVPos(val, scale, dim, off) {
+			let pct = getValPct(val, scale);
+			return off + dim * (scale.dir == -1 ? pct : (1 - pct));
+		}
+
+		function getPos(val, scale, dim, off) {
+			return scale.ori == 0 ? getHPos(val, scale, dim, off) : getVPos(val, scale, dim, off);
+		}
+
+		self.valToPosH = getHPos;
+		self.valToPosV = getVPos;
+
+		let ready = false;
+		self.status = 0;
+
+		const root = self.root = placeDiv(UPLOT);
+
+		if (opts.id != null)
+			root.id = opts.id;
+
+		addClass(root, opts.class);
+
+		if (opts.title) {
+			let title = placeDiv(TITLE, root);
+			title.textContent = opts.title;
+		}
+
+		const can = placeTag("canvas");
+		const ctx = self.ctx = can.getContext("2d");
+
+		const wrap = placeDiv(WRAP, root);
+		const under = self.under = placeDiv(UNDER, wrap);
+		wrap.appendChild(can);
+		const over = self.over = placeDiv(OVER, wrap);
+
+		opts = copy(opts);
+
+		const pxAlign = +ifNull(opts.pxAlign, 1);
+
+		const pxRound = pxRoundGen(pxAlign);
+
+		(opts.plugins || []).forEach(p => {
+			if (p.opts)
+				opts = p.opts(self, opts) || opts;
+		});
+
+		const ms = opts.ms || 1e-3;
+
+		const series  = self.series = mode == 1 ?
+			setDefaults(opts.series || [], xSeriesOpts, ySeriesOpts, false) :
+			setDefaults2(opts.series || [null], xySeriesOpts);
+		const axes    = self.axes   = setDefaults(opts.axes   || [], xAxisOpts,   yAxisOpts,    true);
+		const scales  = self.scales = {};
+		const bands   = self.bands  = opts.bands || [];
+
+		bands.forEach(b => {
+			b.fill = fnOrSelf(b.fill || null);
+		});
+
+		const xScaleKey = mode == 2 ? series[1].facets[0].scale : series[0].scale;
+
+		const drawOrderMap = {
+			axes: drawAxesGrid,
+			series: drawSeries,
+		};
+
+		const drawOrder = (opts.drawOrder || ["axes", "series"]).map(key => drawOrderMap[key]);
+
+		function initScale(scaleKey) {
+			let sc = scales[scaleKey];
+
+			if (sc == null) {
+				let scaleOpts = (opts.scales || EMPTY_OBJ)[scaleKey] || EMPTY_OBJ;
+
+				if (scaleOpts.from != null) {
+					// ensure parent is initialized
+					initScale(scaleOpts.from);
+					// dependent scales inherit
+					scales[scaleKey] = assign({}, scales[scaleOpts.from], scaleOpts, {key: scaleKey});
+				}
+				else {
+					sc = scales[scaleKey] = assign({}, (scaleKey == xScaleKey ? xScaleOpts : yScaleOpts), scaleOpts);
+
+					if (mode == 2)
+						sc.time = false;
+
+					sc.key = scaleKey;
+
+					let isTime = sc.time;
+
+					let rn = sc.range;
+
+					let rangeIsArr = isArr(rn);
+
+					if (scaleKey != xScaleKey || mode == 2) {
+						// if range array has null limits, it should be auto
+						if (rangeIsArr && (rn[0] == null || rn[1] == null)) {
+							rn = {
+								min: rn[0] == null ? autoRangePart : {
+									mode: 1,
+									hard: rn[0],
+									soft: rn[0],
+								},
+								max: rn[1] == null ? autoRangePart : {
+									mode: 1,
+									hard: rn[1],
+									soft: rn[1],
+								},
+							};
+							rangeIsArr = false;
+						}
+
+						if (!rangeIsArr && isObj(rn)) {
+							let cfg = rn;
+							// this is similar to snapNumY
+							rn = (self, dataMin, dataMax) => dataMin == null ? nullNullTuple : rangeNum(dataMin, dataMax, cfg);
+						}
+					}
+
+					sc.range = fnOrSelf(rn || (isTime ? snapTimeX : scaleKey == xScaleKey ?
+						(sc.distr == 3 ? snapLogX : sc.distr == 4 ? snapAsinhX : snapNumX) :
+						(sc.distr == 3 ? snapLogY : sc.distr == 4 ? snapAsinhY : snapNumY)
+					));
+
+					sc.auto = fnOrSelf(rangeIsArr ? false : sc.auto);
+
+					sc.clamp = fnOrSelf(sc.clamp || clampScale);
+
+					// caches for expensive ops like asinh() & log()
+					sc._min = sc._max = null;
+				}
+			}
+		}
+
+		initScale("x");
+		initScale("y");
+
+		// TODO: init scales from facets in mode: 2
+		if (mode == 1) {
+			series.forEach(s => {
+				initScale(s.scale);
+			});
+		}
+
+		axes.forEach(a => {
+			initScale(a.scale);
+		});
+
+		for (let k in opts.scales)
+			initScale(k);
+
+		const scaleX = scales[xScaleKey];
+
+		const xScaleDistr = scaleX.distr;
+
+		let valToPosX, valToPosY;
+
+		if (scaleX.ori == 0) {
+			addClass(root, ORI_HZ);
+			valToPosX = getHPos;
+			valToPosY = getVPos;
+			/*
+			updOriDims = () => {
+				xDimCan = plotWid;
+				xOffCan = plotLft;
+				yDimCan = plotHgt;
+				yOffCan = plotTop;
+
+				xDimCss = plotWidCss;
+				xOffCss = plotLftCss;
+				yDimCss = plotHgtCss;
+				yOffCss = plotTopCss;
+			};
+			*/
+		}
+		else {
+			addClass(root, ORI_VT);
+			valToPosX = getVPos;
+			valToPosY = getHPos;
+			/*
+			updOriDims = () => {
+				xDimCan = plotHgt;
+				xOffCan = plotTop;
+				yDimCan = plotWid;
+				yOffCan = plotLft;
+
+				xDimCss = plotHgtCss;
+				xOffCss = plotTopCss;
+				yDimCss = plotWidCss;
+				yOffCss = plotLftCss;
+			};
+			*/
+		}
+
+		const pendScales = {};
+
+		// explicitly-set initial scales
+		for (let k in scales) {
+			let sc = scales[k];
+
+			if (sc.min != null || sc.max != null) {
+				pendScales[k] = {min: sc.min, max: sc.max};
+				sc.min = sc.max = null;
+			}
+		}
+
+	//	self.tz = opts.tz || Intl.DateTimeFormat().resolvedOptions().timeZone;
+		const _tzDate  = (opts.tzDate || (ts => new Date(round(ts / ms))));
+		const _fmtDate = (opts.fmtDate || fmtDate);
+
+		const _timeAxisSplits = (ms == 1 ? timeAxisSplitsMs(_tzDate) : timeAxisSplitsS(_tzDate));
+		const _timeAxisVals   = timeAxisVals(_tzDate, timeAxisStamps((ms == 1 ? _timeAxisStampsMs : _timeAxisStampsS), _fmtDate));
+		const _timeSeriesVal  = timeSeriesVal(_tzDate, timeSeriesStamp(_timeSeriesStamp, _fmtDate));
+
+		const activeIdxs = [];
+
+		const legend     = (self.legend = assign({}, legendOpts, opts.legend));
+		const showLegend = legend.show;
+		const markers    = legend.markers;
+
+		{
+			legend.idxs = activeIdxs;
+
+			markers.width  = fnOrSelf(markers.width);
+			markers.dash   = fnOrSelf(markers.dash);
+			markers.stroke = fnOrSelf(markers.stroke);
+			markers.fill   = fnOrSelf(markers.fill);
+		}
+
+		let legendEl;
+		let legendRows = [];
+		let legendCells = [];
+		let legendCols;
+		let multiValLegend = false;
+		let NULL_LEGEND_VALUES = {};
+
+		if (legend.live) {
+			const getMultiVals = series[1] ? series[1].values : null;
+			multiValLegend = getMultiVals != null;
+			legendCols = multiValLegend ? getMultiVals(self, 1, 0) : {_: 0};
+
+			for (let k in legendCols)
+				NULL_LEGEND_VALUES[k] = "--";
+		}
+
+		if (showLegend) {
+			legendEl = placeTag("table", LEGEND, root);
+
+			if (multiValLegend) {
+				let head = placeTag("tr", LEGEND_THEAD, legendEl);
+				placeTag("th", null, head);
+
+				for (var key in legendCols)
+					placeTag("th", LEGEND_LABEL, head).textContent = key;
+			}
+			else {
+				addClass(legendEl, LEGEND_INLINE);
+				legend.live && addClass(legendEl, LEGEND_LIVE);
+			}
+		}
+
+		const son  = {show: true};
+		const soff = {show: false};
+
+		function initLegendRow(s, i) {
+			if (i == 0 && (multiValLegend || !legend.live || mode == 2))
+				return nullNullTuple;
+
+			let cells = [];
+
+			let row = placeTag("tr", LEGEND_SERIES, legendEl, legendEl.childNodes[i]);
+
+			addClass(row, s.class);
+
+			if (!s.show)
+				addClass(row, OFF);
+
+			let label = placeTag("th", null, row);
+
+			if (markers.show) {
+				let indic = placeDiv(LEGEND_MARKER, label);
+
+				if (i > 0) {
+					let width  = markers.width(self, i);
+
+					if (width)
+						indic.style.border = width + "px " + markers.dash(self, i) + " " + markers.stroke(self, i);
+
+					indic.style.background = markers.fill(self, i);
+				}
+			}
+
+			let text = placeDiv(LEGEND_LABEL, label);
+			text.textContent = s.label;
+
+			if (i > 0) {
+				if (!markers.show)
+					text.style.color = s.width > 0 ? markers.stroke(self, i) : markers.fill(self, i);
+
+				onMouse("click", label, e => {
+					if (cursor._lock)
+						return;
+
+					let seriesIdx = series.indexOf(s);
+
+					if ((e.ctrlKey || e.metaKey) != legend.isolate) {
+						// if any other series is shown, isolate this one. else show all
+						let isolate = series.some((s, i) => i > 0 && i != seriesIdx && s.show);
+
+						series.forEach((s, i) => {
+							i > 0 && setSeries(i, isolate ? (i == seriesIdx ? son : soff) : son, true, syncOpts.setSeries);
+						});
+					}
+					else
+						setSeries(seriesIdx, {show: !s.show}, true, syncOpts.setSeries);
+				});
+
+				if (cursorFocus) {
+					onMouse(mouseenter, label, e => {
+						if (cursor._lock)
+							return;
+
+						setSeries(series.indexOf(s), FOCUS_TRUE, true, syncOpts.setSeries);
+					});
+				}
+			}
+
+			for (var key in legendCols) {
+				let v = placeTag("td", LEGEND_VALUE, row);
+				v.textContent = "--";
+				cells.push(v);
+			}
+
+			return [row, cells];
+		}
+
+		const mouseListeners = new Map();
+
+		function onMouse(ev, targ, fn) {
+			const targListeners = mouseListeners.get(targ) || {};
+			const listener = cursor.bind[ev](self, targ, fn);
+
+			if (listener) {
+				on(ev, targ, targListeners[ev] = listener);
+				mouseListeners.set(targ, targListeners);
+			}
+		}
+
+		function offMouse(ev, targ, fn) {
+			const targListeners = mouseListeners.get(targ) || {};
+
+			for (let k in targListeners) {
+				if (ev == null || k == ev) {
+					off(k, targ, targListeners[k]);
+					delete targListeners[k];
+				}
+			}
+
+			if (ev == null)
+				mouseListeners.delete(targ);
+		}
+
+		let fullWidCss = 0;
+		let fullHgtCss = 0;
+
+		let plotWidCss = 0;
+		let plotHgtCss = 0;
+
+		// plot margins to account for axes
+		let plotLftCss = 0;
+		let plotTopCss = 0;
+
+		let plotLft = 0;
+		let plotTop = 0;
+		let plotWid = 0;
+		let plotHgt = 0;
+
+		self.bbox = {};
+
+		let shouldSetScales = false;
+		let shouldSetSize = false;
+		let shouldConvergeSize = false;
+		let shouldSetCursor = false;
+		let shouldSetLegend = false;
+
+		function _setSize(width, height, force) {
+			if (force || (width != self.width || height != self.height))
+				calcSize(width, height);
+
+			resetYSeries(false);
+
+			shouldConvergeSize = true;
+			shouldSetSize = true;
+			shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+			commit();
+		}
+
+		function calcSize(width, height) {
+		//	log("calcSize()", arguments);
+
+			self.width  = fullWidCss = plotWidCss = width;
+			self.height = fullHgtCss = plotHgtCss = height;
+			plotLftCss  = plotTopCss = 0;
+
+			calcPlotRect();
+			calcAxesRects();
+
+			let bb = self.bbox;
+
+			plotLft = bb.left   = incrRound(plotLftCss * pxRatio, 0.5);
+			plotTop = bb.top    = incrRound(plotTopCss * pxRatio, 0.5);
+			plotWid = bb.width  = incrRound(plotWidCss * pxRatio, 0.5);
+			plotHgt = bb.height = incrRound(plotHgtCss * pxRatio, 0.5);
+
+		//	updOriDims();
+		}
+
+		// ensures size calc convergence
+		const CYCLE_LIMIT = 3;
+
+		function convergeSize() {
+			let converged = false;
+
+			let cycleNum = 0;
+
+			while (!converged) {
+				cycleNum++;
+
+				let axesConverged = axesCalc(cycleNum);
+				let paddingConverged = paddingCalc(cycleNum);
+
+				converged = cycleNum == CYCLE_LIMIT || (axesConverged && paddingConverged);
+
+				if (!converged) {
+					calcSize(self.width, self.height);
+					shouldSetSize = true;
+				}
+			}
+		}
+
+		function setSize({width, height}) {
+			_setSize(width, height);
+		}
+
+		self.setSize = setSize;
+
+		// accumulate axis offsets, reduce canvas width
+		function calcPlotRect() {
+			// easements for edge labels
+			let hasTopAxis = false;
+			let hasBtmAxis = false;
+			let hasRgtAxis = false;
+			let hasLftAxis = false;
+
+			axes.forEach((axis, i) => {
+				if (axis.show && axis._show) {
+					let {side, _size} = axis;
+					let isVt = side % 2;
+					let labelSize = axis.label != null ? axis.labelSize : 0;
+
+					let fullSize = _size + labelSize;
+
+					if (fullSize > 0) {
+						if (isVt) {
+							plotWidCss -= fullSize;
+
+							if (side == 3) {
+								plotLftCss += fullSize;
+								hasLftAxis = true;
+							}
+							else
+								hasRgtAxis = true;
+						}
+						else {
+							plotHgtCss -= fullSize;
+
+							if (side == 0) {
+								plotTopCss += fullSize;
+								hasTopAxis = true;
+							}
+							else
+								hasBtmAxis = true;
+						}
+					}
+				}
+			});
+
+			sidesWithAxes[0] = hasTopAxis;
+			sidesWithAxes[1] = hasRgtAxis;
+			sidesWithAxes[2] = hasBtmAxis;
+			sidesWithAxes[3] = hasLftAxis;
+
+			// hz padding
+			plotWidCss -= _padding[1] + _padding[3];
+			plotLftCss += _padding[3];
+
+			// vt padding
+			plotHgtCss -= _padding[2] + _padding[0];
+			plotTopCss += _padding[0];
+		}
+
+		function calcAxesRects() {
+			// will accum +
+			let off1 = plotLftCss + plotWidCss;
+			let off2 = plotTopCss + plotHgtCss;
+			// will accum -
+			let off3 = plotLftCss;
+			let off0 = plotTopCss;
+
+			function incrOffset(side, size) {
+				switch (side) {
+					case 1: off1 += size; return off1 - size;
+					case 2: off2 += size; return off2 - size;
+					case 3: off3 -= size; return off3 + size;
+					case 0: off0 -= size; return off0 + size;
+				}
+			}
+
+			axes.forEach((axis, i) => {
+				if (axis.show && axis._show) {
+					let side = axis.side;
+
+					axis._pos = incrOffset(side, axis._size);
+
+					if (axis.label != null)
+						axis._lpos = incrOffset(side, axis.labelSize);
+				}
+			});
+		}
+
+		const cursor = (self.cursor = assign({}, cursorOpts, {drag: {y: mode == 2}}, opts.cursor));
+
+		{
+			cursor.idxs = activeIdxs;
+
+			cursor._lock = false;
+
+			let points = cursor.points;
+
+			points.show   = fnOrSelf(points.show);
+			points.size   = fnOrSelf(points.size);
+			points.stroke = fnOrSelf(points.stroke);
+			points.width  = fnOrSelf(points.width);
+			points.fill   = fnOrSelf(points.fill);
+		}
+
+		const focus = self.focus = assign({}, opts.focus || {alpha: 0.3}, cursor.focus);
+		const cursorFocus = focus.prox >= 0;
+
+		// series-intersection markers
+		let cursorPts = [null];
+
+		function initCursorPt(s, si) {
+			if (si > 0) {
+				let pt = cursor.points.show(self, si);
+
+				if (pt) {
+					addClass(pt, CURSOR_PT);
+					addClass(pt, s.class);
+					elTrans(pt, -10, -10, plotWidCss, plotHgtCss);
+					over.insertBefore(pt, cursorPts[si]);
+
+					return pt;
+				}
+			}
+		}
+
+		function initSeries(s, i) {
+			if (mode == 1 || i > 0) {
+				let isTime = mode == 1 && scales[s.scale].time;
+
+				let sv = s.value;
+				s.value = isTime ? (isStr(sv) ? timeSeriesVal(_tzDate, timeSeriesStamp(sv, _fmtDate)) : sv || _timeSeriesVal) : sv || numSeriesVal;
+				s.label = s.label || (isTime ? timeSeriesLabel : numSeriesLabel);
+			}
+
+			if (i > 0) {
+				s.width  = s.width == null ? 1 : s.width;
+				s.paths  = s.paths || linearPath || retNull;
+				s.fillTo = fnOrSelf(s.fillTo || seriesFillTo);
+				s.pxAlign = +ifNull(s.pxAlign, pxAlign);
+				s.pxRound = pxRoundGen(s.pxAlign);
+
+				s.stroke = fnOrSelf(s.stroke || null);
+				s.fill   = fnOrSelf(s.fill || null);
+				s._stroke = s._fill = s._paths = s._focus = null;
+
+				let _ptDia = ptDia(s.width, 1);
+				let points = s.points = assign({}, {
+					size: _ptDia,
+					width: max(1, _ptDia * .2),
+					stroke: s.stroke,
+					space: _ptDia * 2,
+					paths: pointsPath,
+					_stroke: null,
+					_fill: null,
+				}, s.points);
+				points.show   = fnOrSelf(points.show);
+				points.filter = fnOrSelf(points.filter);
+				points.fill   = fnOrSelf(points.fill);
+				points.stroke = fnOrSelf(points.stroke);
+				points.paths  = fnOrSelf(points.paths);
+				points.pxAlign = s.pxAlign;
+			}
+
+			if (showLegend) {
+				let rowCells = initLegendRow(s, i);
+				legendRows.splice(i, 0, rowCells[0]);
+				legendCells.splice(i, 0, rowCells[1]);
+				legend.values.push(null);	// NULL_LEGEND_VALS not yet avil here :(
+			}
+
+			if (cursor.show) {
+				activeIdxs.splice(i, 0, null);
+
+				let pt = initCursorPt(s, i);
+				pt && cursorPts.splice(i, 0, pt);
+			}
+		}
+
+		function addSeries(opts, si) {
+			si = si == null ? series.length : si;
+
+			opts = setDefault(opts, si, xSeriesOpts, ySeriesOpts);
+			series.splice(si, 0, opts);
+			initSeries(series[si], si);
+		}
+
+		self.addSeries = addSeries;
+
+		function delSeries(i) {
+			series.splice(i, 1);
+
+			if (showLegend) {
+				legend.values.splice(i, 1);
+
+				legendCells.splice(i, 1);
+				let tr = legendRows.splice(i, 1)[0];
+				offMouse(null, tr.firstChild);
+				tr.remove();
+			}
+
+			if (cursor.show) {
+				activeIdxs.splice(i, 1);
+
+				cursorPts.length > 1 && cursorPts.splice(i, 1)[0].remove();
+			}
+
+			// TODO: de-init no-longer-needed scales?
+		}
+
+		self.delSeries = delSeries;
+
+		const sidesWithAxes = [false, false, false, false];
+
+		function initAxis(axis, i) {
+			axis._show = axis.show;
+
+			if (axis.show) {
+				let isVt = axis.side % 2;
+
+				let sc = scales[axis.scale];
+
+				// this can occur if all series specify non-default scales
+				if (sc == null) {
+					axis.scale = isVt ? series[1].scale : xScaleKey;
+					sc = scales[axis.scale];
+				}
+
+				// also set defaults for incrs & values based on axis distr
+				let isTime = sc.time;
+
+				axis.size   = fnOrSelf(axis.size);
+				axis.space  = fnOrSelf(axis.space);
+				axis.rotate = fnOrSelf(axis.rotate);
+				axis.incrs  = fnOrSelf(axis.incrs  || (          sc.distr == 2 ? wholeIncrs : (isTime ? (ms == 1 ? timeIncrsMs : timeIncrsS) : numIncrs)));
+				axis.splits = fnOrSelf(axis.splits || (isTime && sc.distr == 1 ? _timeAxisSplits : sc.distr == 3 ? logAxisSplits : sc.distr == 4 ? asinhAxisSplits : numAxisSplits));
+
+				axis.stroke       = fnOrSelf(axis.stroke);
+				axis.grid.stroke  = fnOrSelf(axis.grid.stroke);
+				axis.ticks.stroke = fnOrSelf(axis.ticks.stroke);
+
+				let av = axis.values;
+
+				axis.values = (
+					// static array of tick values
+					isArr(av) && !isArr(av[0]) ? fnOrSelf(av) :
+					// temporal
+					isTime ? (
+						// config array of fmtDate string tpls
+						isArr(av) ?
+							timeAxisVals(_tzDate, timeAxisStamps(av, _fmtDate)) :
+						// fmtDate string tpl
+						isStr(av) ?
+							timeAxisVal(_tzDate, av) :
+						av || _timeAxisVals
+					) : av || numAxisVals
+				);
+
+				axis.filter = fnOrSelf(axis.filter || (          sc.distr >= 3 ? logAxisValsFilt : retArg1));
+
+				axis.font      = pxRatioFont(axis.font);
+				axis.labelFont = pxRatioFont(axis.labelFont);
+
+				axis._size   = axis.size(self, null, i, 0);
+
+				axis._space  =
+				axis._rotate =
+				axis._incrs  =
+				axis._found  =	// foundIncrSpace
+				axis._splits =
+				axis._values = null;
+
+				if (axis._size > 0)
+					sidesWithAxes[i] = true;
+
+				axis._el = placeDiv(AXIS, wrap);
+
+				// debug
+			//	axis._el.style.background = "#"  + Math.floor(Math.random()*16777215).toString(16) + '80';
+			}
+		}
+
+		function autoPadSide(self, side, sidesWithAxes, cycleNum) {
+			let [hasTopAxis, hasRgtAxis, hasBtmAxis, hasLftAxis] = sidesWithAxes;
+
+			let ori = side % 2;
+			let size = 0;
+
+			if (ori == 0 && (hasLftAxis || hasRgtAxis))
+				size = (side == 0 && !hasTopAxis || side == 2 && !hasBtmAxis ? round(xAxisOpts.size / 3) : 0);
+			if (ori == 1 && (hasTopAxis || hasBtmAxis))
+				size = (side == 1 && !hasRgtAxis || side == 3 && !hasLftAxis ? round(yAxisOpts.size / 2) : 0);
+
+			return size;
+		}
+
+		const padding = self.padding = (opts.padding || [autoPadSide,autoPadSide,autoPadSide,autoPadSide]).map(p => fnOrSelf(ifNull(p, autoPadSide)));
+		const _padding = self._padding = padding.map((p, i) => p(self, i, sidesWithAxes, 0));
+
+		let dataLen;
+
+		// rendered data window
+		let i0 = null;
+		let i1 = null;
+		const idxs = mode == 1 ? series[0].idxs : null;
+
+		let data0 = null;
+
+		let viaAutoScaleX = false;
+
+		function setData(_data, _resetScales) {
+			if (mode == 2) {
+				dataLen = 0;
+				for (let i = 1; i < series.length; i++)
+					dataLen += data[i][0].length;
+				self.data = data = _data;
+			}
+			else {
+				data = (_data || []).slice();
+				data[0] = data[0] || [];
+
+				self.data = data.slice();
+				data0 = data[0];
+				dataLen = data0.length;
+
+				if (xScaleDistr == 2)
+					data[0] = data0.map((v, i) => i);
+			}
+
+			self._data = data;
+
+			resetYSeries(true);
+
+			fire("setData");
+
+			if (_resetScales !== false) {
+				let xsc = scaleX;
+
+				if (xsc.auto(self, viaAutoScaleX))
+					autoScaleX();
+				else
+					_setScale(xScaleKey, xsc.min, xsc.max);
+
+				shouldSetCursor = cursor.left >= 0;
+				shouldSetLegend = true;
+				commit();
+			}
+		}
+
+		self.setData = setData;
+
+		function autoScaleX() {
+			viaAutoScaleX = true;
+
+			let _min, _max;
+
+			if (mode == 1) {
+				if (dataLen > 0) {
+					i0 = idxs[0] = 0;
+					i1 = idxs[1] = dataLen - 1;
+
+					_min = data[0][i0];
+					_max = data[0][i1];
+
+					if (xScaleDistr == 2) {
+						_min = i0;
+						_max = i1;
+					}
+					else if (dataLen == 1) {
+						if (xScaleDistr == 3)
+							[_min, _max] = rangeLog(_min, _min, scaleX.log, false);
+						else if (xScaleDistr == 4)
+							[_min, _max] = rangeAsinh(_min, _min, scaleX.log, false);
+						else if (scaleX.time)
+							_max = _min + round(86400 / ms);
+						else
+							[_min, _max] = rangeNum(_min, _max, rangePad, true);
+					}
+				}
+				else {
+					i0 = idxs[0] = _min = null;
+					i1 = idxs[1] = _max = null;
+				}
+			}
+
+			_setScale(xScaleKey, _min, _max);
+		}
+
+		let ctxStroke, ctxFill, ctxWidth, ctxDash, ctxJoin, ctxCap, ctxFont, ctxAlign, ctxBaseline;
+		let ctxAlpha;
+
+		function setCtxStyle(stroke = transparent, width, dash = EMPTY_ARR, cap = "butt", fill = transparent, join = "round") {
+			if (stroke != ctxStroke)
+				ctx.strokeStyle = ctxStroke = stroke;
+			if (fill != ctxFill)
+				ctx.fillStyle = ctxFill = fill;
+			if (width != ctxWidth)
+				ctx.lineWidth = ctxWidth = width;
+			if (join != ctxJoin)
+				ctx.lineJoin = ctxJoin = join;
+			if (cap != ctxCap)
+				ctx.lineCap = ctxCap = cap; // (‿|‿)
+			if (dash != ctxDash)
+				ctx.setLineDash(ctxDash = dash);
+		}
+
+		function setFontStyle(font, fill, align, baseline) {
+			if (fill != ctxFill)
+				ctx.fillStyle = ctxFill = fill;
+			if (font != ctxFont)
+				ctx.font = ctxFont = font;
+			if (align != ctxAlign)
+				ctx.textAlign = ctxAlign = align;
+			if (baseline != ctxBaseline)
+				ctx.textBaseline = ctxBaseline = baseline;
+		}
+
+		function accScale(wsc, psc, facet, data) {
+			if (wsc.auto(self, viaAutoScaleX) && (psc == null || psc.min == null)) {
+				let _i0 = ifNull(i0, 0);
+				let _i1 = ifNull(i1, data.length - 1);
+
+				// only run getMinMax() for invalidated series data, else reuse
+				let minMax = facet.min == null ? (wsc.distr == 3 ? getMinMaxLog(data, _i0, _i1) : getMinMax(data, _i0, _i1)) : [facet.min, facet.max];
+
+				// initial min/max
+				wsc.min = min(wsc.min, facet.min = minMax[0]);
+				wsc.max = max(wsc.max, facet.max = minMax[1]);
+			}
+		}
+
+		function setScales() {
+		//	log("setScales()", arguments);
+
+			// wip scales
+			let wipScales = copy(scales, fastIsObj);
+
+			for (let k in wipScales) {
+				let wsc = wipScales[k];
+				let psc = pendScales[k];
+
+				if (psc != null && psc.min != null) {
+					assign(wsc, psc);
+
+					// explicitly setting the x-scale invalidates everything (acts as redraw)
+					if (k == xScaleKey)
+						resetYSeries(true);
+				}
+				else if (k != xScaleKey || mode == 2) {
+					if (dataLen == 0 && wsc.from == null) {
+						let minMax = wsc.range(self, null, null, k);
+						wsc.min = minMax[0];
+						wsc.max = minMax[1];
+					}
+					else {
+						wsc.min = inf;
+						wsc.max = -inf;
+					}
+				}
+			}
+
+			if (dataLen > 0) {
+				// pre-range y-scales from y series' data values
+				series.forEach((s, i) => {
+					if (mode == 1) {
+						let k = s.scale;
+						let wsc = wipScales[k];
+						let psc = pendScales[k];
+
+						if (i == 0) {
+							let minMax = wsc.range(self, wsc.min, wsc.max, k);
+
+							wsc.min = minMax[0];
+							wsc.max = minMax[1];
+
+							i0 = closestIdx(wsc.min, data[0]);
+							i1 = closestIdx(wsc.max, data[0]);
+
+							// closest indices can be outside of view
+							if (data[0][i0] < wsc.min)
+								i0++;
+							if (data[0][i1] > wsc.max)
+								i1--;
+
+							s.min = data0[i0];
+							s.max = data0[i1];
+						}
+						else if (s.show && s.auto)
+							accScale(wsc, psc, s, data[i]);
+
+						s.idxs[0] = i0;
+						s.idxs[1] = i1;
+					}
+					else {
+						if (i > 0) {
+							if (s.show && s.auto) {
+								// TODO: only handles, assumes and requires facets[0] / 'x' scale, and facets[1] / 'y' scale
+								let [ xFacet, yFacet ] = s.facets;
+								let xScaleKey = xFacet.scale;
+								let yScaleKey = yFacet.scale;
+								let [ xData, yData ] = data[i];
+
+								accScale(wipScales[xScaleKey], pendScales[xScaleKey], xFacet, xData);
+								accScale(wipScales[yScaleKey], pendScales[yScaleKey], yFacet, yData);
+
+								// temp
+								s.min = yFacet.min;
+								s.max = yFacet.max;
+							}
+						}
+					}
+				});
+
+				// range independent scales
+				for (let k in wipScales) {
+					let wsc = wipScales[k];
+					let psc = pendScales[k];
+
+					if (wsc.from == null && (psc == null || psc.min == null)) {
+						let minMax = wsc.range(
+							self,
+							wsc.min ==  inf ? null : wsc.min,
+							wsc.max == -inf ? null : wsc.max,
+							k
+						);
+						wsc.min = minMax[0];
+						wsc.max = minMax[1];
+					}
+				}
+			}
+
+			// range dependent scales
+			for (let k in wipScales) {
+				let wsc = wipScales[k];
+
+				if (wsc.from != null) {
+					let base = wipScales[wsc.from];
+
+					if (base.min == null)
+						wsc.min = wsc.max = null;
+					else {
+						let minMax = wsc.range(self, base.min, base.max, k);
+						wsc.min = minMax[0];
+						wsc.max = minMax[1];
+					}
+				}
+			}
+
+			let changed = {};
+			let anyChanged = false;
+
+			for (let k in wipScales) {
+				let wsc = wipScales[k];
+				let sc = scales[k];
+
+				if (sc.min != wsc.min || sc.max != wsc.max) {
+					sc.min = wsc.min;
+					sc.max = wsc.max;
+
+					let distr = sc.distr;
+
+					sc._min = distr == 3 ? log10(sc.min) : distr == 4 ? asinh(sc.min, sc.asinh) : sc.min;
+					sc._max = distr == 3 ? log10(sc.max) : distr == 4 ? asinh(sc.max, sc.asinh) : sc.max;
+
+					changed[k] = anyChanged = true;
+				}
+			}
+
+			if (anyChanged) {
+				// invalidate paths of all series on changed scales
+				series.forEach((s, i) => {
+					if (mode == 2) {
+						if (i > 0 && changed.y)
+							s._paths = null;
+					}
+					else {
+						if (changed[s.scale])
+							s._paths = null;
+					}
+				});
+
+				for (let k in changed) {
+					shouldConvergeSize = true;
+					fire("setScale", k);
+				}
+
+				if (cursor.show)
+					shouldSetCursor = shouldSetLegend = cursor.left >= 0;
+			}
+
+			for (let k in pendScales)
+				pendScales[k] = null;
+		}
+
+		// grabs the nearest indices with y data outside of x-scale limits
+		function getOuterIdxs(ydata) {
+			let _i0 = clamp(i0 - 1, 0, dataLen - 1);
+			let _i1 = clamp(i1 + 1, 0, dataLen - 1);
+
+			while (ydata[_i0] == null && _i0 > 0)
+				_i0--;
+
+			while (ydata[_i1] == null && _i1 < dataLen - 1)
+				_i1++;
+
+			return [_i0, _i1];
+		}
+
+		function drawSeries() {
+			if (dataLen > 0) {
+				series.forEach((s, i) => {
+					if (i > 0 && s.show && s._paths == null) {
+						let _idxs = getOuterIdxs(data[i]);
+						s._paths = s.paths(self, i, _idxs[0], _idxs[1]);
+					}
+				});
+
+				series.forEach((s, i) => {
+					if (i > 0 && s.show) {
+						if (ctxAlpha != s.alpha)
+							ctx.globalAlpha = ctxAlpha = s.alpha;
+
+						{
+							cacheStrokeFill(i, false);
+							s._paths && drawPath(i, false);
+						}
+
+						{
+							cacheStrokeFill(i, true);
+
+							let show = s.points.show(self, i, i0, i1);
+							let idxs = s.points.filter(self, i, show, s._paths ? s._paths.gaps : null);
+
+							if (show || idxs) {
+								s.points._paths = s.points.paths(self, i, i0, i1, idxs);
+								drawPath(i, true);
+							}
+						}
+
+						if (ctxAlpha != 1)
+							ctx.globalAlpha = ctxAlpha = 1;
+
+						fire("drawSeries", i);
+					}
+				});
+			}
+		}
+
+		function cacheStrokeFill(si, _points) {
+			let s = _points ? series[si].points : series[si];
+
+			s._stroke = s.stroke(self, si);
+			s._fill   = s.fill(self, si);
+		}
+
+		function drawPath(si, _points) {
+			let s = _points ? series[si].points : series[si];
+
+			let strokeStyle = s._stroke;
+			let fillStyle   = s._fill;
+
+			let { stroke, fill, clip: gapsClip, flags } = s._paths;
+			let boundsClip = null;
+			let width = roundDec(s.width * pxRatio, 3);
+			let offset = (width % 2) / 2;
+
+			if (_points && fillStyle == null)
+				fillStyle = width > 0 ? "#fff" : strokeStyle;
+
+			let _pxAlign = s.pxAlign == 1;
+
+			_pxAlign && ctx.translate(offset, offset);
+
+			if (!_points) {
+				let lft = plotLft,
+					top = plotTop,
+					wid = plotWid,
+					hgt = plotHgt;
+
+				let halfWid = width * pxRatio / 2;
+
+				if (s.min == 0)
+					hgt += halfWid;
+
+				if (s.max == 0) {
+					top -= halfWid;
+					hgt += halfWid;
+				}
+
+				boundsClip = new Path2D();
+				boundsClip.rect(lft, top, wid, hgt);
+			}
+
+			// the points pathbuilder's gapsClip is its boundsClip, since points dont need gaps clipping, and bounds depend on point size
+			if (_points)
+				strokeFill(strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, gapsClip);
+			else
+				fillStroke(si, strokeStyle, width, s.dash, s.cap, fillStyle, stroke, fill, flags, boundsClip, gapsClip);
+
+			_pxAlign && ctx.translate(-offset, -offset);
+		}
+
+		function fillStroke(si, strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip) {
+			let didStrokeFill = false;
+
+			// for all bands where this series is the top edge, create upwards clips using the bottom edges
+			// and apply clips + fill with band fill or dfltFill
+			bands.forEach((b, bi) => {
+				// isUpperEdge?
+				if (b.series[0] == si) {
+					let lowerEdge = series[b.series[1]];
+					let lowerData = data[b.series[1]];
+
+					let bandClip = (lowerEdge._paths || EMPTY_OBJ).band;
+					let gapsClip2;
+
+					let _fillStyle = null;
+
+					// hasLowerEdge?
+					if (lowerEdge.show && bandClip && hasData(lowerData, i0, i1)) {
+						_fillStyle = b.fill(self, bi) || fillStyle;
+						gapsClip2 = lowerEdge._paths.clip;
+					}
+					else
+						bandClip = null;
+
+					strokeFill(strokeStyle, lineWidth, lineDash, lineCap, _fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip);
+
+					didStrokeFill = true;
+				}
+			});
+
+			if (!didStrokeFill)
+				strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip);
+		}
+
+		const CLIP_FILL_STROKE = BAND_CLIP_FILL | BAND_CLIP_STROKE;
+
+		function strokeFill(strokeStyle, lineWidth, lineDash, lineCap, fillStyle, strokePath, fillPath, flags, boundsClip, gapsClip, gapsClip2, bandClip) {
+			setCtxStyle(strokeStyle, lineWidth, lineDash, lineCap, fillStyle);
+
+			if (boundsClip || gapsClip || bandClip) {
+				ctx.save();
+				boundsClip && ctx.clip(boundsClip);
+				gapsClip && ctx.clip(gapsClip);
+			}
+
+			if (bandClip) {
+				if ((flags & CLIP_FILL_STROKE) == CLIP_FILL_STROKE) {
+					ctx.clip(bandClip);
+					gapsClip2 && ctx.clip(gapsClip2);
+					doFill(fillStyle, fillPath);
+					doStroke(strokeStyle, strokePath, lineWidth);
+				}
+				else if (flags & BAND_CLIP_STROKE) {
+					doFill(fillStyle, fillPath);
+					ctx.clip(bandClip);
+					doStroke(strokeStyle, strokePath, lineWidth);
+				}
+				else if (flags & BAND_CLIP_FILL) {
+					ctx.save();
+					ctx.clip(bandClip);
+					gapsClip2 && ctx.clip(gapsClip2);
+					doFill(fillStyle, fillPath);
+					ctx.restore();
+					doStroke(strokeStyle, strokePath, lineWidth);
+				}
+			}
+			else {
+				doFill(fillStyle, fillPath);
+				doStroke(strokeStyle, strokePath, lineWidth);
+			}
+
+			if (boundsClip || gapsClip || bandClip)
+				ctx.restore();
+		}
+
+		function doStroke(strokeStyle, strokePath, lineWidth) {
+			if (lineWidth > 0) {
+				if (strokePath instanceof Map) {
+					strokePath.forEach((strokePath, strokeStyle) => {
+						ctx.strokeStyle = ctxStroke = strokeStyle;
+						ctx.stroke(strokePath);
+					});
+				}
+				else
+					strokePath != null && strokeStyle && ctx.stroke(strokePath);
+			}
+		}
+
+		function doFill(fillStyle, fillPath) {
+			if (fillPath instanceof Map) {
+				fillPath.forEach((fillPath, fillStyle) => {
+					ctx.fillStyle = ctxFill = fillStyle;
+					ctx.fill(fillPath);
+				});
+			}
+			else
+				fillPath != null && fillStyle && ctx.fill(fillPath);
+		}
+
+		function getIncrSpace(axisIdx, min, max, fullDim) {
+			let axis = axes[axisIdx];
+
+			let incrSpace;
+
+			if (fullDim <= 0)
+				incrSpace = [0, 0];
+			else {
+				let minSpace = axis._space = axis.space(self, axisIdx, min, max, fullDim);
+				let incrs    = axis._incrs = axis.incrs(self, axisIdx, min, max, fullDim, minSpace);
+				incrSpace    = findIncr(min, max, incrs, fullDim, minSpace);
+			}
+
+			return (axis._found = incrSpace);
+		}
+
+		function drawOrthoLines(offs, filts, ori, side, pos0, len, width, stroke, dash, cap) {
+			let offset = (width % 2) / 2;
+
+			pxAlign == 1 && ctx.translate(offset, offset);
+
+			setCtxStyle(stroke, width, dash, cap, stroke);
+
+			ctx.beginPath();
+
+			let x0, y0, x1, y1, pos1 = pos0 + (side == 0 || side == 3 ? -len : len);
+
+			if (ori == 0) {
+				y0 = pos0;
+				y1 = pos1;
+			}
+			else {
+				x0 = pos0;
+				x1 = pos1;
+			}
+
+			for (let i = 0; i < offs.length; i++) {
+				if (filts[i] != null) {
+					if (ori == 0)
+						x0 = x1 = offs[i];
+					else
+						y0 = y1 = offs[i];
+
+					ctx.moveTo(x0, y0);
+					ctx.lineTo(x1, y1);
+				}
+			}
+
+			ctx.stroke();
+
+			pxAlign == 1 && ctx.translate(-offset, -offset);
+		}
+
+		function axesCalc(cycleNum) {
+		//	log("axesCalc()", arguments);
+
+			let converged = true;
+
+			axes.forEach((axis, i) => {
+				if (!axis.show)
+					return;
+
+				let scale = scales[axis.scale];
+
+				if (scale.min == null) {
+					if (axis._show) {
+						converged = false;
+						axis._show = false;
+						resetYSeries(false);
+					}
+					return;
+				}
+				else {
+					if (!axis._show) {
+						converged = false;
+						axis._show = true;
+						resetYSeries(false);
+					}
+				}
+
+				let side = axis.side;
+				let ori = side % 2;
+
+				let {min, max} = scale;		// 		// should this toggle them ._show = false
+
+				let [_incr, _space] = getIncrSpace(i, min, max, ori == 0 ? plotWidCss : plotHgtCss);
+
+				if (_space == 0)
+					return;
+
+				// if we're using index positions, force first tick to match passed index
+				let forceMin = scale.distr == 2;
+
+				let _splits = axis._splits = axis.splits(self, i, min, max, _incr, _space, forceMin);
+
+				// tick labels
+				// BOO this assumes a specific data/series
+				let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+				let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+				let values = axis._values = axis.values(self, axis.filter(self, splits, i, _space, incr), i, _space, incr);
+
+				// rotating of labels only supported on bottom x axis
+				axis._rotate = side == 2 ? axis.rotate(self, values, i, _space) : 0;
+
+				let oldSize = axis._size;
+
+				axis._size = ceil(axis.size(self, values, i, cycleNum));
+
+				if (oldSize != null && axis._size != oldSize)			// ready && ?
+					converged = false;
+			});
+
+			return converged;
+		}
+
+		function paddingCalc(cycleNum) {
+			let converged = true;
+
+			padding.forEach((p, i) => {
+				let _p = p(self, i, sidesWithAxes, cycleNum);
+
+				if (_p != _padding[i])
+					converged = false;
+
+				_padding[i] = _p;
+			});
+
+			return converged;
+		}
+
+		function drawAxesGrid() {
+			for (let i = 0; i < axes.length; i++) {
+				let axis = axes[i];
+
+				if (!axis.show || !axis._show)
+					continue;
+
+				let side = axis.side;
+				let ori = side % 2;
+
+				let x, y;
+
+				let fillStyle = axis.stroke(self, i);
+
+				let shiftDir = side == 0 || side == 3 ? -1 : 1;
+
+				// axis label
+				if (axis.label) {
+					let shiftAmt = axis.labelGap * shiftDir;
+					let baseLpos = round((axis._lpos + shiftAmt) * pxRatio);
+
+					setFontStyle(axis.labelFont[0], fillStyle, "center", side == 2 ? TOP : BOTTOM);
+
+					ctx.save();
+
+					if (ori == 1) {
+						x = y = 0;
+
+						ctx.translate(
+							baseLpos,
+							round(plotTop + plotHgt / 2),
+						);
+						ctx.rotate((side == 3 ? -PI : PI) / 2);
+
+					}
+					else {
+						x = round(plotLft + plotWid / 2);
+						y = baseLpos;
+					}
+
+					ctx.fillText(axis.label, x, y);
+
+					ctx.restore();
+				}
+
+				let [_incr, _space] = axis._found;
+
+				if (_space == 0)
+					continue;
+
+				let scale = scales[axis.scale];
+
+				let plotDim = ori == 0 ? plotWid : plotHgt;
+				let plotOff = ori == 0 ? plotLft : plotTop;
+
+				let axisGap = round(axis.gap * pxRatio);
+
+				let _splits = axis._splits;
+
+				// tick labels
+				// BOO this assumes a specific data/series
+				let splits = scale.distr == 2 ? _splits.map(i => data0[i]) : _splits;
+				let incr   = scale.distr == 2 ? data0[_splits[1]] - data0[_splits[0]] : _incr;
+
+				let ticks = axis.ticks;
+				let tickSize = ticks.show ? round(ticks.size * pxRatio) : 0;
+
+				// rotating of labels only supported on bottom x axis
+				let angle = axis._rotate * -PI/180;
+
+				let basePos  = pxRound(axis._pos * pxRatio);
+				let shiftAmt = (tickSize + axisGap) * shiftDir;
+				let finalPos = basePos + shiftAmt;
+				    y        = ori == 0 ? finalPos : 0;
+				    x        = ori == 1 ? finalPos : 0;
+
+				let font         = axis.font[0];
+				let textAlign    = axis.align == 1 ? LEFT :
+				                   axis.align == 2 ? RIGHT :
+				                   angle > 0 ? LEFT :
+				                   angle < 0 ? RIGHT :
+				                   ori == 0 ? "center" : side == 3 ? RIGHT : LEFT;
+				let textBaseline = angle ||
+				                   ori == 1 ? "middle" : side == 2 ? TOP   : BOTTOM;
+
+				setFontStyle(font, fillStyle, textAlign, textBaseline);
+
+				let lineHeight = axis.font[1] * lineMult;
+
+				let canOffs = _splits.map(val => pxRound(getPos(val, scale, plotDim, plotOff)));
+
+				let _values = axis._values;
+
+				for (let i = 0; i < _values.length; i++) {
+					let val = _values[i];
+
+					if (val != null) {
+						if (ori == 0)
+							x = canOffs[i];
+						else
+							y = canOffs[i];
+
+						val = "" + val;
+
+						let _parts = val.indexOf("\n") == -1 ? [val] : val.split(/\n/gm);
+
+						for (let j = 0; j < _parts.length; j++) {
+							let text = _parts[j];
+
+							if (angle) {
+								ctx.save();
+								ctx.translate(x, y + j * lineHeight); // can this be replaced with position math?
+								ctx.rotate(angle); // can this be done once?
+								ctx.fillText(text, 0, 0);
+								ctx.restore();
+							}
+							else
+								ctx.fillText(text, x, y + j * lineHeight);
+						}
+					}
+				}
+
+				// ticks
+				if (ticks.show) {
+					drawOrthoLines(
+						canOffs,
+						ticks.filter(self, splits, i, _space, incr),
+						ori,
+						side,
+						basePos,
+						tickSize,
+						roundDec(ticks.width * pxRatio, 3),
+						ticks.stroke(self, i),
+						ticks.dash,
+						ticks.cap,
+					);
+				}
+
+				// grid
+				let grid = axis.grid;
+
+				if (grid.show) {
+					drawOrthoLines(
+						canOffs,
+						grid.filter(self, splits, i, _space, incr),
+						ori,
+						ori == 0 ? 2 : 1,
+						ori == 0 ? plotTop : plotLft,
+						ori == 0 ? plotHgt : plotWid,
+						roundDec(grid.width * pxRatio, 3),
+						grid.stroke(self, i),
+						grid.dash,
+						grid.cap,
+					);
+				}
+			}
+
+			fire("drawAxes");
+		}
+
+		function resetYSeries(minMax) {
+		//	log("resetYSeries()", arguments);
+
+			series.forEach((s, i) => {
+				if (i > 0) {
+					s._paths = null;
+
+					if (minMax) {
+						if (mode == 1) {
+							s.min = null;
+							s.max = null;
+						}
+						else {
+							s.facets.forEach(f => {
+								f.min = null;
+								f.max = null;
+							});
+						}
+					}
+				}
+			});
+		}
+
+		let queuedCommit = false;
+
+		function commit() {
+			if (!queuedCommit) {
+				microTask(_commit);
+				queuedCommit = true;
+			}
+		}
+
+		function _commit() {
+		//	log("_commit()", arguments);
+
+			if (shouldSetScales) {
+				setScales();
+				shouldSetScales = false;
+			}
+
+			if (shouldConvergeSize) {
+				convergeSize();
+				shouldConvergeSize = false;
+			}
+
+			if (shouldSetSize) {
+				setStylePx(under, LEFT,   plotLftCss);
+				setStylePx(under, TOP,    plotTopCss);
+				setStylePx(under, WIDTH,  plotWidCss);
+				setStylePx(under, HEIGHT, plotHgtCss);
+
+				setStylePx(over, LEFT,    plotLftCss);
+				setStylePx(over, TOP,     plotTopCss);
+				setStylePx(over, WIDTH,   plotWidCss);
+				setStylePx(over, HEIGHT,  plotHgtCss);
+
+				setStylePx(wrap, WIDTH,   fullWidCss);
+				setStylePx(wrap, HEIGHT,  fullHgtCss);
+
+				// NOTE: mutating this during print preview in Chrome forces transparent
+				// canvas pixels to white, even when followed up with clearRect() below
+				can.width  = round(fullWidCss * pxRatio);
+				can.height = round(fullHgtCss * pxRatio);
+
+
+				axes.forEach(a => {
+					let { _show, _el, _size, _pos, side } = a;
+
+					if (_show) {
+						let posOffset = (side === 3 || side === 0 ? _size : 0);
+						let isVt = side % 2 == 1;
+
+						setStylePx(_el, isVt ? "left"   : "top",    _pos - posOffset);
+						setStylePx(_el, isVt ? "width"  : "height", _size);
+						setStylePx(_el, isVt ? "top"    : "left",   isVt ? plotTopCss : plotLftCss);
+						setStylePx(_el, isVt ? "height" : "width",  isVt ? plotHgtCss : plotWidCss);
+
+						_el && remClass(_el, OFF);
+					}
+					else
+						_el && addClass(_el, OFF);
+				});
+
+				// invalidate ctx style cache
+				ctxStroke = ctxFill = ctxWidth = ctxJoin = ctxCap = ctxFont = ctxAlign = ctxBaseline = ctxDash = null;
+				ctxAlpha = 1;
+
+				syncRect(false);
+
+				fire("setSize");
+
+				shouldSetSize = false;
+			}
+
+			if (fullWidCss > 0 && fullHgtCss > 0) {
+				ctx.clearRect(0, 0, can.width, can.height);
+				fire("drawClear");
+				drawOrder.forEach(fn => fn());
+				fire("draw");
+			}
+
+		//	if (shouldSetSelect) {
+			// TODO: update .u-select metrics (if visible)
+			//	setStylePx(selectDiv, TOP, select.top = 0);
+			//	setStylePx(selectDiv, LEFT, select.left = 0);
+			//	setStylePx(selectDiv, WIDTH, select.width = 0);
+			//	setStylePx(selectDiv, HEIGHT, select.height = 0);
+			//	shouldSetSelect = false;
+		//	}
+
+			if (cursor.show && shouldSetCursor) {
+				updateCursor(null, true, false);
+				shouldSetCursor = false;
+			}
+
+		//	if (FEAT_LEGEND && legend.show && legend.live && shouldSetLegend) {}
+
+			if (!ready) {
+				ready = true;
+				self.status = 1;
+
+				fire("ready");
+			}
+
+			viaAutoScaleX = false;
+
+			queuedCommit = false;
+		}
+
+		self.redraw = (rebuildPaths, recalcAxes) => {
+			shouldConvergeSize = recalcAxes || false;
+
+			if (rebuildPaths !== false)
+				_setScale(xScaleKey, scaleX.min, scaleX.max);
+			else
+				commit();
+		};
+
+		// redraw() => setScale('x', scales.x.min, scales.x.max);
+
+		// explicit, never re-ranged (is this actually true? for x and y)
+		function setScale(key, opts) {
+			let sc = scales[key];
+
+			if (sc.from == null) {
+				if (dataLen == 0) {
+					let minMax = sc.range(self, opts.min, opts.max, key);
+					opts.min = minMax[0];
+					opts.max = minMax[1];
+				}
+
+				if (opts.min > opts.max) {
+					let _min = opts.min;
+					opts.min = opts.max;
+					opts.max = _min;
+				}
+
+				if (dataLen > 1 && opts.min != null && opts.max != null && opts.max - opts.min < 1e-16)
+					return;
+
+				if (key == xScaleKey) {
+					if (sc.distr == 2 && dataLen > 0) {
+						opts.min = closestIdx(opts.min, data[0]);
+						opts.max = closestIdx(opts.max, data[0]);
+
+						if (opts.min == opts.max)
+							opts.max++;
+					}
+				}
+
+			//	log("setScale()", arguments);
+
+				pendScales[key] = opts;
+
+				shouldSetScales = true;
+				commit();
+			}
+		}
+
+		self.setScale = setScale;
+
+	//	INTERACTION
+
+		let xCursor;
+		let yCursor;
+		let vCursor;
+		let hCursor;
+
+		// starting position before cursor.move
+		let rawMouseLeft0;
+		let rawMouseTop0;
+
+		// starting position
+		let mouseLeft0;
+		let mouseTop0;
+
+		// current position before cursor.move
+		let rawMouseLeft1;
+		let rawMouseTop1;
+
+		// current position
+		let mouseLeft1;
+		let mouseTop1;
+
+		let dragging = false;
+
+		const drag = cursor.drag;
+
+		let dragX = drag.x;
+		let dragY = drag.y;
+
+		if (cursor.show) {
+			if (cursor.x)
+				xCursor = placeDiv(CURSOR_X, over);
+			if (cursor.y)
+				yCursor = placeDiv(CURSOR_Y, over);
+
+			if (scaleX.ori == 0) {
+				vCursor = xCursor;
+				hCursor = yCursor;
+			}
+			else {
+				vCursor = yCursor;
+				hCursor = xCursor;
+			}
+
+			mouseLeft1 = cursor.left;
+			mouseTop1 = cursor.top;
+		}
+
+		const select = self.select = assign({
+			show:   true,
+			over:   true,
+			left:   0,
+			width:  0,
+			top:    0,
+			height: 0,
+		}, opts.select);
+
+		const selectDiv = select.show ? placeDiv(SELECT, select.over ? over : under) : null;
+
+		function setSelect(opts, _fire) {
+			if (select.show) {
+				for (let prop in opts)
+					setStylePx(selectDiv, prop, select[prop] = opts[prop]);
+
+				_fire !== false && fire("setSelect");
+			}
+		}
+
+		self.setSelect = setSelect;
+
+		function toggleDOM(i, onOff) {
+			let s = series[i];
+			let label = showLegend ? legendRows[i] : null;
+
+			if (s.show)
+				label && remClass(label, OFF);
+			else {
+				label && addClass(label, OFF);
+				cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+			}
+		}
+
+		function _setScale(key, min, max) {
+			setScale(key, {min, max});
+		}
+
+		function setSeries(i, opts, _fire, _pub) {
+		//	log("setSeries()", arguments);
+
+			let s = series[i];
+
+			if (opts.focus != null)
+				setFocus(i);
+
+			if (opts.show != null) {
+				s.show = opts.show;
+				toggleDOM(i, opts.show);
+
+				_setScale(mode == 2 ? s.facets[1].scale : s.scale, null, null);
+				commit();
+			}
+
+			_fire !== false && fire("setSeries", i, opts);
+
+			_pub && pubSync("setSeries", self, i, opts);
+		}
+
+		self.setSeries = setSeries;
+
+		function setBand(bi, opts) {
+			assign(bands[bi], opts);
+		}
+
+		function addBand(opts, bi) {
+			opts.fill = fnOrSelf(opts.fill || null);
+			bi = bi == null ? bands.length : bi;
+			bands.splice(bi, 0, opts);
+		}
+
+		function delBand(bi) {
+			if (bi == null)
+				bands.length = 0;
+			else
+				bands.splice(bi, 1);
+		}
+
+		self.addBand = addBand;
+		self.setBand = setBand;
+		self.delBand = delBand;
+
+		function setAlpha(i, value) {
+			series[i].alpha = value;
+
+			if (cursor.show && cursorPts[i])
+				cursorPts[i].style.opacity = value;
+
+			if (showLegend && legendRows[i])
+				legendRows[i].style.opacity = value;
+		}
+
+		// y-distance
+		let closestDist;
+		let closestSeries;
+		let focusedSeries;
+		const FOCUS_TRUE  = {focus: true};
+		const FOCUS_FALSE = {focus: false};
+
+		function setFocus(i) {
+			if (i != focusedSeries) {
+			//	log("setFocus()", arguments);
+
+				let allFocused = i == null;
+
+				let _setAlpha = focus.alpha != 1;
+
+				series.forEach((s, i2) => {
+					let isFocused = allFocused || i2 == 0 || i2 == i;
+					s._focus = allFocused ? null : isFocused;
+					_setAlpha && setAlpha(i2, isFocused ? 1 : focus.alpha);
+				});
+
+				focusedSeries = i;
+				_setAlpha && commit();
+			}
+		}
+
+		if (showLegend && cursorFocus) {
+			on(mouseleave, legendEl, e => {
+				if (cursor._lock)
+					return;
+				setSeries(null, FOCUS_FALSE, true, syncOpts.setSeries);
+				updateCursor(null, true, false);
+			});
+		}
+
+		function posToVal(pos, scale, can) {
+			let sc = scales[scale];
+
+			if (can)
+				pos = pos / pxRatio - (sc.ori == 1 ? plotTopCss : plotLftCss);
+
+			let dim = plotWidCss;
+
+			if (sc.ori == 1) {
+				dim = plotHgtCss;
+				pos = dim - pos;
+			}
+
+			if (sc.dir == -1)
+				pos = dim - pos;
+
+			let _min = sc._min,
+				_max = sc._max,
+				pct = pos / dim;
+
+			let sv = _min + (_max - _min) * pct;
+
+			let distr = sc.distr;
+
+			return (
+				distr == 3 ? pow(10, sv) :
+				distr == 4 ? sinh(sv, sc.asinh) :
+				sv
+			);
+		}
+
+		function closestIdxFromXpos(pos, can) {
+			let v = posToVal(pos, xScaleKey, can);
+			return closestIdx(v, data[0], i0, i1);
+		}
+
+		self.valToIdx = val => closestIdx(val, data[0]);
+		self.posToIdx = closestIdxFromXpos;
+		self.posToVal = posToVal;
+		self.valToPos = (val, scale, can) => (
+			scales[scale].ori == 0 ?
+			getHPos(val, scales[scale],
+				can ? plotWid : plotWidCss,
+				can ? plotLft : 0,
+			) :
+			getVPos(val, scales[scale],
+				can ? plotHgt : plotHgtCss,
+				can ? plotTop : 0,
+			)
+		);
+
+		// defers calling expensive functions
+		function batch(fn) {
+			fn(self);
+			commit();
+		}
+
+		self.batch = batch;
+
+		(self.setCursor = (opts, _fire, _pub) => {
+			mouseLeft1 = opts.left;
+			mouseTop1 = opts.top;
+		//	assign(cursor, opts);
+			updateCursor(null, _fire, _pub);
+		});
+
+		function setSelH(off, dim) {
+			setStylePx(selectDiv, LEFT,  select.left = off);
+			setStylePx(selectDiv, WIDTH, select.width = dim);
+		}
+
+		function setSelV(off, dim) {
+			setStylePx(selectDiv, TOP,    select.top = off);
+			setStylePx(selectDiv, HEIGHT, select.height = dim);
+		}
+
+		let setSelX = scaleX.ori == 0 ? setSelH : setSelV;
+		let setSelY = scaleX.ori == 1 ? setSelH : setSelV;
+
+		function syncLegend() {
+			if (showLegend && legend.live) {
+				for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+					if (i == 0 && multiValLegend)
+						continue;
+
+					let vals = legend.values[i];
+
+					let j = 0;
+
+					for (let k in vals)
+						legendCells[i][j++].firstChild.nodeValue = vals[k];
+				}
+			}
+		}
+
+		function setLegend(opts, _fire) {
+			if (opts != null) {
+				let idx = opts.idx;
+
+				legend.idx = idx;
+				series.forEach((s, sidx) => {
+					(sidx > 0 || !multiValLegend) && setLegendValues(sidx, idx);
+				});
+			}
+
+			if (showLegend && legend.live)
+				syncLegend();
+
+			shouldSetLegend = false;
+
+			_fire !== false && fire("setLegend");
+		}
+
+		self.setLegend = setLegend;
+
+		function setLegendValues(sidx, idx) {
+			let val;
+
+			if (idx == null)
+				val = NULL_LEGEND_VALUES;
+			else {
+				let s = series[sidx];
+				let src = sidx == 0 && xScaleDistr == 2 ? data0 : data[sidx];
+				val = multiValLegend ? s.values(self, sidx, idx) : {_: s.value(self, src[idx], sidx, idx)};
+			}
+
+			legend.values[sidx] = val;
+		}
+
+		function updateCursor(src, _fire, _pub) {
+		//	ts == null && log("updateCursor()", arguments);
+
+			rawMouseLeft1 = mouseLeft1;
+			rawMouseTop1 = mouseTop1;
+
+			[mouseLeft1, mouseTop1] = cursor.move(self, mouseLeft1, mouseTop1);
+
+			if (cursor.show) {
+				vCursor && elTrans(vCursor, round(mouseLeft1), 0, plotWidCss, plotHgtCss);
+				hCursor && elTrans(hCursor, 0, round(mouseTop1), plotWidCss, plotHgtCss);
+			}
+
+			let idx;
+
+			// when zooming to an x scale range between datapoints the binary search
+			// for nearest min/max indices results in this condition. cheap hack :D
+			let noDataInRange = i0 > i1; // works for mode 1 only
+
+			closestDist = inf;
+
+			// TODO: extract
+			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
+			let yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss;
+
+			// if cursor hidden, hide points & clear legend vals
+			if (mouseLeft1 < 0 || dataLen == 0 || noDataInRange) {
+				idx = null;
+
+				for (let i = 0; i < series.length; i++) {
+					if (i > 0) {
+						cursorPts.length > 1 && elTrans(cursorPts[i], -10, -10, plotWidCss, plotHgtCss);
+					}
+				}
+
+				if (cursorFocus)
+					setSeries(null, FOCUS_TRUE, true, src == null && syncOpts.setSeries);
+
+				if (legend.live) {
+					activeIdxs.fill(null);
+					shouldSetLegend = true;
+
+					for (let i = 0; i < series.length; i++)
+						legend.values[i] = NULL_LEGEND_VALUES;
+				}
+			}
+			else {
+			//	let pctY = 1 - (y / rect.height);
+
+				let mouseXPos, valAtPosX, xPos;
+
+				if (mode == 1) {
+					mouseXPos = scaleX.ori == 0 ? mouseLeft1 : mouseTop1;
+					valAtPosX = posToVal(mouseXPos, xScaleKey);
+					idx = closestIdx(valAtPosX, data[0], i0, i1);
+					xPos = incrRoundUp(valToPosX(data[0][idx], scaleX, xDim, 0), 0.5);
+				}
+
+				for (let i = mode == 2 ? 1 : 0; i < series.length; i++) {
+					let s = series[i];
+
+					let idx1  = activeIdxs[i];
+					let yVal1 = mode == 1 ? data[i][idx1] : data[i][1][idx1];
+
+					let idx2  = cursor.dataIdx(self, i, idx, valAtPosX);
+					let yVal2 = mode == 1 ? data[i][idx2] : data[i][1][idx2];
+
+					shouldSetLegend = shouldSetLegend || yVal2 != yVal1 || idx2 != idx1;
+
+					activeIdxs[i] = idx2;
+
+					let xPos2 = idx2 == idx ? xPos : incrRoundUp(valToPosX(mode == 1 ? data[0][idx2] : data[i][0][idx2], scaleX, xDim, 0), 0.5);
+
+					if (i > 0 && s.show) {
+						let yPos = yVal2 == null ? -10 : incrRoundUp(valToPosY(yVal2, mode == 1 ? scales[s.scale] : scales[s.facets[1].scale], yDim, 0), 0.5);
+
+						if (yPos > 0 && mode == 1) {
+							let dist = abs(yPos - mouseTop1);
+
+							if (dist <= closestDist) {
+								closestDist = dist;
+								closestSeries = i;
+							}
+						}
+
+						let hPos, vPos;
+
+						if (scaleX.ori == 0) {
+							hPos = xPos2;
+							vPos = yPos;
+						}
+						else {
+							hPos = yPos;
+							vPos = xPos2;
+						}
+
+						if (shouldSetLegend && cursorPts.length > 1) {
+							elColor(cursorPts[i], cursor.points.fill(self, i), cursor.points.stroke(self, i));
+
+							let ptWid, ptHgt, ptLft, ptTop,
+								centered = true,
+								getBBox = cursor.points.bbox;
+
+							if (getBBox != null) {
+								centered = false;
+
+								let bbox = getBBox(self, i);
+
+								ptLft = bbox.left;
+								ptTop = bbox.top;
+								ptWid = bbox.width;
+								ptHgt = bbox.height;
+							}
+							else {
+								ptLft = hPos;
+								ptTop = vPos;
+								ptWid = ptHgt = cursor.points.size(self, i);
+							}
+
+							elSize(cursorPts[i], ptWid, ptHgt, centered);
+							elTrans(cursorPts[i], ptLft, ptTop, plotWidCss, plotHgtCss);
+						}
+					}
+
+					if (legend.live) {
+						if (!shouldSetLegend || i == 0 && multiValLegend)
+							continue;
+
+						setLegendValues(i, idx2);
+					}
+				}
+			}
+
+			cursor.idx = idx;
+			cursor.left = mouseLeft1;
+			cursor.top = mouseTop1;
+
+			if (shouldSetLegend) {
+				legend.idx = idx;
+				setLegend();
+			}
+
+			// nit: cursor.drag.setSelect is assumed always true
+			if (select.show && dragging) {
+				if (src != null) {
+					let [xKey, yKey] = syncOpts.scales;
+					let [matchXKeys, matchYKeys] = syncOpts.match;
+					let [xKeySrc, yKeySrc] = src.cursor.sync.scales;
+
+					// match the dragX/dragY implicitness/explicitness of src
+					let sdrag = src.cursor.drag;
+					dragX = sdrag._x;
+					dragY = sdrag._y;
+
+					let { left, top, width, height } = src.select;
+
+					let sori = src.scales[xKey].ori;
+					let sPosToVal = src.posToVal;
+
+					let sOff, sDim, sc, a, b;
+
+					let matchingX = xKey != null && matchXKeys(xKey, xKeySrc);
+					let matchingY = yKey != null && matchYKeys(yKey, yKeySrc);
+
+					if (matchingX) {
+						if (sori == 0) {
+							sOff = left;
+							sDim = width;
+						}
+						else {
+							sOff = top;
+							sDim = height;
+						}
+
+						if (dragX) {
+							sc = scales[xKey];
+
+							a = valToPosX(sPosToVal(sOff, xKeySrc),        sc, xDim, 0);
+							b = valToPosX(sPosToVal(sOff + sDim, xKeySrc), sc, xDim, 0);
+
+							setSelX(min(a,b), abs(b-a));
+						}
+						else
+							setSelX(0, xDim);
+
+						if (!matchingY)
+							setSelY(0, yDim);
+					}
+
+					if (matchingY) {
+						if (sori == 1) {
+							sOff = left;
+							sDim = width;
+						}
+						else {
+							sOff = top;
+							sDim = height;
+						}
+
+						if (dragY) {
+							sc = scales[yKey];
+
+							a = valToPosY(sPosToVal(sOff, yKeySrc),        sc, yDim, 0);
+							b = valToPosY(sPosToVal(sOff + sDim, yKeySrc), sc, yDim, 0);
+
+							setSelY(min(a,b), abs(b-a));
+						}
+						else
+							setSelY(0, yDim);
+
+						if (!matchingX)
+							setSelX(0, xDim);
+					}
+				}
+				else {
+					let rawDX = abs(rawMouseLeft1 - rawMouseLeft0);
+					let rawDY = abs(rawMouseTop1 - rawMouseTop0);
+
+					if (scaleX.ori == 1) {
+						let _rawDX = rawDX;
+						rawDX = rawDY;
+						rawDY = _rawDX;
+					}
+
+					dragX = drag.x && rawDX >= drag.dist;
+					dragY = drag.y && rawDY >= drag.dist;
+
+					let uni = drag.uni;
+
+					if (uni != null) {
+						// only calc drag status if they pass the dist thresh
+						if (dragX && dragY) {
+							dragX = rawDX >= uni;
+							dragY = rawDY >= uni;
+
+							// force unidirectionality when both are under uni limit
+							if (!dragX && !dragY) {
+								if (rawDY > rawDX)
+									dragY = true;
+								else
+									dragX = true;
+							}
+						}
+					}
+					else if (drag.x && drag.y && (dragX || dragY))
+						// if omni with no uni then both dragX / dragY should be true if either is true
+						dragX = dragY = true;
+
+					let p0, p1;
+
+					if (dragX) {
+						if (scaleX.ori == 0) {
+							p0 = mouseLeft0;
+							p1 = mouseLeft1;
+						}
+						else {
+							p0 = mouseTop0;
+							p1 = mouseTop1;
+						}
+
+						setSelX(min(p0, p1), abs(p1 - p0));
+
+						if (!dragY)
+							setSelY(0, yDim);
+					}
+
+					if (dragY) {
+						if (scaleX.ori == 1) {
+							p0 = mouseLeft0;
+							p1 = mouseLeft1;
+						}
+						else {
+							p0 = mouseTop0;
+							p1 = mouseTop1;
+						}
+
+						setSelY(min(p0, p1), abs(p1 - p0));
+
+						if (!dragX)
+							setSelX(0, xDim);
+					}
+
+					// the drag didn't pass the dist requirement
+					if (!dragX && !dragY) {
+						setSelX(0, 0);
+						setSelY(0, 0);
+					}
+				}
+			}
+
+			drag._x = dragX;
+			drag._y = dragY;
+
+			if (src == null) {
+				if (_pub) {
+					if (syncKey != null) {
+						let [xSyncKey, ySyncKey] = syncOpts.scales;
+
+						syncOpts.values[0] = xSyncKey != null ? posToVal(scaleX.ori == 0 ? mouseLeft1 : mouseTop1, xSyncKey) : null;
+						syncOpts.values[1] = ySyncKey != null ? posToVal(scaleX.ori == 1 ? mouseLeft1 : mouseTop1, ySyncKey) : null;
+					}
+
+					pubSync(mousemove, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, idx);
+				}
+
+				if (cursorFocus) {
+					let shouldPub = _pub && syncOpts.setSeries;
+					let p = focus.prox;
+
+					if (focusedSeries == null) {
+						if (closestDist <= p)
+							setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+					}
+					else {
+						if (closestDist > p)
+							setSeries(null, FOCUS_TRUE, true, shouldPub);
+						else if (closestSeries != focusedSeries)
+							setSeries(closestSeries, FOCUS_TRUE, true, shouldPub);
+					}
+				}
+			}
+
+			ready && _fire !== false && fire("setCursor");
+		}
+
+		let rect = null;
+
+		function syncRect(defer) {
+			if (defer === true)
+				rect = null;
+			else {
+				rect = over.getBoundingClientRect();
+				fire("syncRect", rect);
+			}
+		}
+
+		function mouseMove(e, src, _l, _t, _w, _h, _i) {
+			if (cursor._lock)
+				return;
+
+			cacheMouse(e, src, _l, _t, _w, _h, _i, false, e != null);
+
+			if (e != null)
+				updateCursor(null, true, true);
+			else
+				updateCursor(src, true, false);
+		}
+
+		function cacheMouse(e, src, _l, _t, _w, _h, _i, initial, snap) {
+			if (rect == null)
+				syncRect(false);
+
+			if (e != null) {
+				_l = e.clientX - rect.left;
+				_t = e.clientY - rect.top;
+			}
+			else {
+				if (_l < 0 || _t < 0) {
+					mouseLeft1 = -10;
+					mouseTop1 = -10;
+					return;
+				}
+
+				let [xKey, yKey] = syncOpts.scales;
+
+				let syncOptsSrc = src.cursor.sync;
+				let [xValSrc, yValSrc] = syncOptsSrc.values;
+				let [xKeySrc, yKeySrc] = syncOptsSrc.scales;
+				let [matchXKeys, matchYKeys] = syncOpts.match;
+
+				let rotSrc = src.scales[xKeySrc].ori == 1;
+
+				let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss,
+					yDim = scaleX.ori == 1 ? plotWidCss : plotHgtCss,
+					_xDim = rotSrc ? _h : _w,
+					_yDim = rotSrc ? _w : _h,
+					_xPos = rotSrc ? _t : _l,
+					_yPos = rotSrc ? _l : _t;
+
+				if (xKeySrc != null)
+					_l = matchXKeys(xKey, xKeySrc) ? getPos(xValSrc, scales[xKey], xDim, 0) : -10;
+				else
+					_l = xDim * (_xPos/_xDim);
+
+				if (yKeySrc != null)
+					_t = matchYKeys(yKey, yKeySrc) ? getPos(yValSrc, scales[yKey], yDim, 0) : -10;
+				else
+					_t = yDim * (_yPos/_yDim);
+
+				if (scaleX.ori == 1) {
+					let __l = _l;
+					_l = _t;
+					_t = __l;
+				}
+			}
+
+			if (snap) {
+				if (_l <= 1 || _l >= plotWidCss - 1)
+					_l = incrRound(_l, plotWidCss);
+
+				if (_t <= 1 || _t >= plotHgtCss - 1)
+					_t = incrRound(_t, plotHgtCss);
+			}
+
+			if (initial) {
+				rawMouseLeft0 = _l;
+				rawMouseTop0 = _t;
+
+				[mouseLeft0, mouseTop0] = cursor.move(self, _l, _t);
+			}
+			else {
+				mouseLeft1 = _l;
+				mouseTop1 = _t;
+			}
+		}
+
+		function hideSelect() {
+			setSelect({
+				width: 0,
+				height: 0,
+			}, false);
+		}
+
+		function mouseDown(e, src, _l, _t, _w, _h, _i) {
+			dragging = true;
+			dragX = dragY = drag._x = drag._y = false;
+
+			cacheMouse(e, src, _l, _t, _w, _h, _i, true, false);
+
+			if (e != null) {
+				onMouse(mouseup, doc, mouseUp);
+				pubSync(mousedown, self, mouseLeft0, mouseTop0, plotWidCss, plotHgtCss, null);
+			}
+		}
+
+		function mouseUp(e, src, _l, _t, _w, _h, _i) {
+			dragging = drag._x = drag._y = false;
+
+			cacheMouse(e, src, _l, _t, _w, _h, _i, false, true);
+
+			let { left, top, width, height } = select;
+
+			let hasSelect = width > 0 || height > 0;
+
+			hasSelect && setSelect(select);
+
+			if (drag.setScale && hasSelect) {
+			//	if (syncKey != null) {
+			//		dragX = drag.x;
+			//		dragY = drag.y;
+			//	}
+
+				let xOff = left,
+					xDim = width,
+					yOff = top,
+					yDim = height;
+
+				if (scaleX.ori == 1) {
+					xOff = top,
+					xDim = height,
+					yOff = left,
+					yDim = width;
+				}
+
+				if (dragX) {
+					_setScale(xScaleKey,
+						posToVal(xOff, xScaleKey),
+						posToVal(xOff + xDim, xScaleKey)
+					);
+				}
+
+				if (dragY) {
+					for (let k in scales) {
+						let sc = scales[k];
+
+						if (k != xScaleKey && sc.from == null && sc.min != inf) {
+							_setScale(k,
+								posToVal(yOff + yDim, k),
+								posToVal(yOff, k)
+							);
+						}
+					}
+				}
+
+				hideSelect();
+			}
+			else if (cursor.lock) {
+				cursor._lock = !cursor._lock;
+
+				if (!cursor._lock)
+					updateCursor(null, true, false);
+			}
+
+			if (e != null) {
+				offMouse(mouseup, doc);
+				pubSync(mouseup, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+			}
+		}
+
+		function mouseLeave(e, src, _l, _t, _w, _h, _i) {
+			if (!cursor._lock) {
+				let _dragging = dragging;
+
+				if (dragging) {
+					// handle case when mousemove aren't fired all the way to edges by browser
+					let snapH = true;
+					let snapV = true;
+					let snapProx = 10;
+
+					let dragH, dragV;
+
+					if (scaleX.ori == 0) {
+						dragH = dragX;
+						dragV = dragY;
+					}
+					else {
+						dragH = dragY;
+						dragV = dragX;
+					}
+
+					if (dragH && dragV) {
+						// maybe omni corner snap
+						snapH = mouseLeft1 <= snapProx || mouseLeft1 >= plotWidCss - snapProx;
+						snapV = mouseTop1  <= snapProx || mouseTop1  >= plotHgtCss - snapProx;
+					}
+
+					if (dragH && snapH)
+						mouseLeft1 = mouseLeft1 < mouseLeft0 ? 0 : plotWidCss;
+
+					if (dragV && snapV)
+						mouseTop1 = mouseTop1 < mouseTop0 ? 0 : plotHgtCss;
+
+					updateCursor(null, true, true);
+
+					dragging = false;
+				}
+
+				mouseLeft1 = -10;
+				mouseTop1 = -10;
+
+				// passing a non-null timestamp to force sync/mousemove event
+				updateCursor(null, true, true);
+
+				if (_dragging)
+					dragging = _dragging;
+			}
+		}
+
+		function dblClick(e, src, _l, _t, _w, _h, _i) {
+			autoScaleX();
+
+			hideSelect();
+
+			if (e != null)
+				pubSync(dblclick, self, mouseLeft1, mouseTop1, plotWidCss, plotHgtCss, null);
+		}
+
+		function syncPxRatio() {
+			axes.forEach(syncFontSize);
+			_setSize(self.width, self.height, true);
+		}
+
+		on(dppxchange, win, syncPxRatio);
+
+		// internal pub/sub
+		const events = {};
+
+		events.mousedown = mouseDown;
+		events.mousemove = mouseMove;
+		events.mouseup = mouseUp;
+		events.dblclick = dblClick;
+		events["setSeries"] = (e, src, idx, opts) => {
+			setSeries(idx, opts, true, false);
+		};
+
+		if (cursor.show) {
+			onMouse(mousedown,  over, mouseDown);
+			onMouse(mousemove,  over, mouseMove);
+			onMouse(mouseenter, over, syncRect);
+			onMouse(mouseleave, over, mouseLeave);
+
+			onMouse(dblclick, over, dblClick);
+
+			cursorPlots.add(self);
+
+			self.syncRect = syncRect;
+		}
+
+		// external on/off
+		const hooks = self.hooks = opts.hooks || {};
+
+		function fire(evName, a1, a2) {
+			if (evName in hooks) {
+				hooks[evName].forEach(fn => {
+					fn.call(null, self, a1, a2);
+				});
+			}
+		}
+
+		(opts.plugins || []).forEach(p => {
+			for (let evName in p.hooks)
+				hooks[evName] = (hooks[evName] || []).concat(p.hooks[evName]);
+		});
+
+		const syncOpts = assign({
+			key: null,
+			setSeries: false,
+			filters: {
+				pub: retTrue,
+				sub: retTrue,
+			},
+			scales: [xScaleKey, series[1] ? series[1].scale : null],
+			match: [retEq, retEq],
+			values: [null, null],
+		}, cursor.sync);
+
+		(cursor.sync = syncOpts);
+
+		const syncKey = syncOpts.key;
+
+		const sync = _sync(syncKey);
+
+		function pubSync(type, src, x, y, w, h, i) {
+			if (syncOpts.filters.pub(type, src, x, y, w, h, i))
+				sync.pub(type, src, x, y, w, h, i);
+		}
+
+		sync.sub(self);
+
+		function pub(type, src, x, y, w, h, i) {
+			if (syncOpts.filters.sub(type, src, x, y, w, h, i))
+				events[type](null, src, x, y, w, h, i);
+		}
+
+		(self.pub = pub);
+
+		function destroy() {
+			sync.unsub(self);
+			cursorPlots.delete(self);
+			mouseListeners.clear();
+			off(dppxchange, win, syncPxRatio);
+			root.remove();
+			fire("destroy");
+		}
+
+		self.destroy = destroy;
+
+		function _init() {
+			fire("init", opts, data);
+
+			setData(data || opts.data, false);
+
+			if (pendScales[xScaleKey])
+				setScale(xScaleKey, pendScales[xScaleKey]);
+			else
+				autoScaleX();
+
+			_setSize(opts.width, opts.height);
+
+			updateCursor(null, true, false);
+
+			setSelect(select, false);
+		}
+
+		series.forEach(initSeries);
+
+		axes.forEach(initAxis);
+
+		if (then) {
+			if (then instanceof HTMLElement) {
+				then.appendChild(root);
+				_init();
+			}
+			else
+				then(self, _init);
+		}
+		else
+			_init();
+
+		return self;
+	}
+
+	uPlot.assign = assign;
+	uPlot.fmtNum = fmtNum;
+	uPlot.rangeNum = rangeNum;
+	uPlot.rangeLog = rangeLog;
+	uPlot.rangeAsinh = rangeAsinh;
+	uPlot.orient   = orient;
+
+	{
+		uPlot.join = join;
+	}
+
+	{
+		uPlot.fmtDate = fmtDate;
+		uPlot.tzDate  = tzDate;
+	}
+
+	{
+		uPlot.sync = _sync;
+	}
+
+	{
+		uPlot.addGap = addGap;
+		uPlot.clipGaps = clipGaps;
+
+		let paths = uPlot.paths = {
+			points,
+		};
+
+		(paths.linear  = linear);
+		(paths.stepped = stepped);
+		(paths.bars    = bars);
+		(paths.spline  = monotoneCubic);
+	}
+
+	return uPlot;
+
+})();
diff --git a/src/main/resources/static/plugins/uplot/uPlot.iife.min.js b/src/main/resources/static/plugins/uplot/uPlot.iife.min.js
new file mode 100644
index 0000000..0403c32
--- /dev/null
+++ b/src/main/resources/static/plugins/uplot/uPlot.iife.min.js
@@ -0,0 +1,2 @@
+/*! https://github.com/leeoniya/uPlot (v1.6.18) */
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diff --git a/src/main/resources/static/plugins/uplot/uPlot.min.css b/src/main/resources/static/plugins/uplot/uPlot.min.css
new file mode 100644
index 0000000..c54627d
--- /dev/null
+++ b/src/main/resources/static/plugins/uplot/uPlot.min.css
@@ -0,0 +1 @@
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