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/* *
* Parallel coordinates module
*
* (c) 2010-2019 Pawel Fus
*
* License: www.highcharts.com/license
*/
'use strict';
import H from '../parts/Globals.js';
import '../parts/Axis.js';
import '../parts/Chart.js';
import '../parts/Series.js';
// Extensions for parallel coordinates plot.
var Axis = H.Axis,
Chart = H.Chart,
ChartProto = Chart.prototype,
AxisProto = H.Axis.prototype;
var addEvent = H.addEvent,
pick = H.pick,
wrap = H.wrap,
merge = H.merge,
erase = H.erase,
splat = H.splat,
extend = H.extend,
defined = H.defined,
arrayMin = H.arrayMin,
arrayMax = H.arrayMax;
var defaultXAxisOptions = {
lineWidth: 0,
tickLength: 0,
opposite: true,
type: 'category'
};
/**
* @optionparent chart
*/
var defaultParallelOptions = {
/**
* Flag to render charts as a parallel coordinates plot. In a parallel
* coordinates plot (||-coords) by default all required yAxes are generated
* and the legend is disabled. This feature requires
* `modules/parallel-coordinates.js`.
*
* @sample {highcharts} /highcharts/demo/parallel-coordinates/
* Parallel coordinates demo
* @sample {highcharts} highcharts/parallel-coordinates/polar/
* Star plot, multivariate data in a polar chart
*
* @since 6.0.0
* @product highcharts
*/
parallelCoordinates: false,
/**
* Common options for all yAxes rendered in a parallel coordinates plot.
* This feature requires `modules/parallel-coordinates.js`.
*
* The default options are:
* <pre>
* parallelAxes: {
* lineWidth: 1, // classic mode only
* gridlinesWidth: 0, // classic mode only
* title: {
* text: '',
* reserveSpace: false
* },
* labels: {
* x: 0,
* y: 0,
* align: 'center',
* reserveSpace: false
* },
* offset: 0
* }</pre>
*
* @sample {highcharts} highcharts/parallel-coordinates/parallelaxes/
* Set the same tickAmount for all yAxes
*
* @extends yAxis
* @since 6.0.0
* @product highcharts
* @excluding alternateGridColor, breaks, id, gridLineColor,
* gridLineDashStyle, gridLineWidth, minorGridLineColor,
* minorGridLineDashStyle, minorGridLineWidth, plotBands,
* plotLines, angle, gridLineInterpolation, maxColor, maxZoom,
* minColor, scrollbar, stackLabels, stops
*/
parallelAxes: {
lineWidth: 1,
/**
* Titles for yAxes are taken from
* [xAxis.categories](#xAxis.categories). All options for `xAxis.labels`
* applies to parallel coordinates titles. For example, to style
* categories, use [xAxis.labels.style](#xAxis.labels.style).
*
* @excluding align, enabled, margin, offset, position3d, reserveSpace,
* rotation, skew3d, style, text, useHTML, x, y
*/
title: {
text: '',
reserveSpace: false
},
labels: {
x: 0,
y: 4,
align: 'center',
reserveSpace: false
},
offset: 0
}
};
H.setOptions({
chart: defaultParallelOptions
});
// Initialize parallelCoordinates
addEvent(Chart, 'init', function (e) {
var options = e.args[0],
defaultyAxis = splat(options.yAxis || {}),
yAxisLength = defaultyAxis.length,
newYAxes = [];
/**
* Flag used in parallel coordinates plot to check if chart has ||-coords
* (parallel coords).
*
* @requires module:modules/parallel-coordinates
*
* @name Highcharts.Chart#hasParallelCoordinates
* @type {boolean}
*/
this.hasParallelCoordinates = options.chart &&
options.chart.parallelCoordinates;
if (this.hasParallelCoordinates) {
this.setParallelInfo(options);
// Push empty yAxes in case user did not define them:
for (; yAxisLength <= this.parallelInfo.counter; yAxisLength++) {
newYAxes.push({});
}
if (!options.legend) {
options.legend = {};
}
if (options.legend.enabled === undefined) {
options.legend.enabled = false;
}
merge(
true,
options,
// Disable boost
{
boost: {
seriesThreshold: Number.MAX_VALUE
},
plotOptions: {
series: {
boostThreshold: Number.MAX_VALUE
}
}
}
);
options.yAxis = defaultyAxis.concat(newYAxes);
options.xAxis = merge(
defaultXAxisOptions, // docs
splat(options.xAxis || {})[0]
);
}
});
// Initialize parallelCoordinates
addEvent(Chart, 'update', function (e) {
var options = e.options;
if (options.chart) {
if (defined(options.chart.parallelCoordinates)) {
this.hasParallelCoordinates = options.chart.parallelCoordinates;
}
this.options.chart.parallelAxes = merge(
this.options.chart.parallelAxes,
options.chart.parallelAxes
);
}
if (this.hasParallelCoordinates) {
// (#10081)
if (options.series) {
this.setParallelInfo(options);
}
this.yAxis.forEach(function (axis) {
axis.update({}, false);
});
}
});
extend(ChartProto, /** @lends Highcharts.Chart.prototype */ {
/**
* Define how many parellel axes we have according to the longest dataset.
* This is quite heavy - loop over all series and check series.data.length
* Consider:
*
* - make this an option, so user needs to set this to get better
* performance
*
* - check only first series for number of points and assume the rest is the
* same
*
* @private
* @function Highcharts.Chart#setParallelInfo
*
* @param {Highcharts.Options} options
* User options
*/
setParallelInfo: function (options) {
var chart = this,
seriesOptions = options.series;
chart.parallelInfo = {
counter: 0
};
seriesOptions.forEach(function (series) {
if (series.data) {
chart.parallelInfo.counter = Math.max(
chart.parallelInfo.counter,
series.data.length - 1
);
}
});
}
});
// On update, keep parallelPosition.
AxisProto.keepProps.push('parallelPosition');
// Update default options with predefined for a parallel coords.
addEvent(Axis, 'afterSetOptions', function (e) {
var axis = this,
chart = axis.chart,
axisPosition = ['left', 'width', 'height', 'top'];
if (chart.hasParallelCoordinates) {
if (chart.inverted) {
axisPosition = axisPosition.reverse();
}
if (axis.isXAxis) {
axis.options = merge(
axis.options,
defaultXAxisOptions,
e.userOptions
);
} else {
axis.options = merge(
axis.options,
axis.chart.options.chart.parallelAxes,
e.userOptions
);
axis.parallelPosition = pick(
axis.parallelPosition,
chart.yAxis.length
);
axis.setParallelPosition(axisPosition, axis.options);
}
}
});
/* Each axis should gather extremes from points on a particular position in
series.data. Not like the default one, which gathers extremes from all series
bind to this axis. Consider using series.points instead of series.yData. */
addEvent(Axis, 'getSeriesExtremes', function (e) {
if (this.chart && this.chart.hasParallelCoordinates && !this.isXAxis) {
var index = this.parallelPosition,
currentPoints = [];
this.series.forEach(function (series) {
if (series.visible && defined(series.yData[index])) {
// We need to use push() beacause of null points
currentPoints.push(series.yData[index]);
}
});
this.dataMin = arrayMin(currentPoints);
this.dataMax = arrayMax(currentPoints);
e.preventDefault();
}
});
extend(AxisProto, /** @lends Highcharts.Axis.prototype */ {
/**
* Set predefined left+width and top+height (inverted) for yAxes. This
* method modifies options param.
*
* @function Highcharts.Axis#setParallelPosition
*
* @param {Array<string>} axisPosition
* ['left', 'width', 'height', 'top'] or
* ['top', 'height', 'width', 'left'] for an inverted chart.
*
* @param {Highcharts.AxisOptions} options
* {@link Highcharts.Axis#options}.
*/
setParallelPosition: function (axisPosition, options) {
var fraction = (this.parallelPosition + 0.5) /
(this.chart.parallelInfo.counter + 1);
if (this.chart.polar) {
options.angle = 360 * fraction;
} else {
options[axisPosition[0]] = 100 * fraction + '%';
this[axisPosition[1]] = options[axisPosition[1]] = 0;
// In case of chart.update(inverted), remove old options:
this[axisPosition[2]] = options[axisPosition[2]] = null;
this[axisPosition[3]] = options[axisPosition[3]] = null;
}
}
});
// Bind each series to each yAxis. yAxis needs a reference to all series to
// calculate extremes.
addEvent(H.Series, 'bindAxes', function (e) {
if (this.chart.hasParallelCoordinates) {
var series = this;
this.chart.axes.forEach(function (axis) {
series.insert(axis.series);
axis.isDirty = true;
});
series.xAxis = this.chart.xAxis[0];
series.yAxis = this.chart.yAxis[0];
e.preventDefault();
}
});
// Translate each point using corresponding yAxis.
addEvent(H.Series, 'afterTranslate', function () {
var series = this,
chart = this.chart,
points = series.points,
dataLength = points && points.length,
closestPointRangePx = Number.MAX_VALUE,
lastPlotX,
point,
i;
if (this.chart.hasParallelCoordinates) {
for (i = 0; i < dataLength; i++) {
point = points[i];
if (defined(point.y)) {
if (chart.polar) {
point.plotX = chart.yAxis[i].angleRad || 0;
} else if (chart.inverted) {
point.plotX = (
chart.plotHeight -
chart.yAxis[i].top +
chart.plotTop
);
} else {
point.plotX = chart.yAxis[i].left - chart.plotLeft;
}
point.clientX = point.plotX;
point.plotY = chart.yAxis[i]
.translate(point.y, false, true, null, true);
if (lastPlotX !== undefined) {
closestPointRangePx = Math.min(
closestPointRangePx,
Math.abs(point.plotX - lastPlotX)
);
}
lastPlotX = point.plotX;
point.isInside = chart.isInsidePlot(
point.plotX,
point.plotY,
chart.inverted
);
} else {
point.isNull = true;
}
}
this.closestPointRangePx = closestPointRangePx;
}
}, { order: 1 });
// On destroy, we need to remove series from each axis.series
H.addEvent(H.Series, 'destroy', function () {
if (this.chart.hasParallelCoordinates) {
(this.chart.axes || []).forEach(function (axis) {
if (axis && axis.series) {
erase(axis.series, this);
axis.isDirty = axis.forceRedraw = true;
}
}, this);
}
});
function addFormattedValue(proceed) {
var chart = this.series && this.series.chart,
config = proceed.apply(this, Array.prototype.slice.call(arguments, 1)),
formattedValue,
yAxisOptions,
labelFormat,
yAxis;
if (
chart &&
chart.hasParallelCoordinates &&
!defined(config.formattedValue)
) {
yAxis = chart.yAxis[this.x];
yAxisOptions = yAxis.options;
labelFormat = pick(
/**
* Parallel coordinates only. Format that will be used for point.y
* and available in [tooltip.pointFormat](#tooltip.pointFormat) as
* `{point.formattedValue}`. If not set, `{point.formattedValue}`
* will use other options, in this order:
*
* 1. [yAxis.labels.format](#yAxis.labels.format) will be used if
* set
*
* 2. If yAxis is a category, then category name will be displayed
*
* 3. If yAxis is a datetime, then value will use the same format as
* yAxis labels
*
* 4. If yAxis is linear/logarithmic type, then simple value will be
* used
*
* @sample {highcharts}
* /highcharts/parallel-coordinates/tooltipvalueformat/
* Different tooltipValueFormats's
*
* @type {string}
* @default undefined
* @since 6.0.0
* @product highcharts
* @apioption yAxis.tooltipValueFormat
*/
yAxisOptions.tooltipValueFormat,
yAxisOptions.labels.format
);
if (labelFormat) {
formattedValue = H.format(
labelFormat,
extend(
this,
{ value: this.y }
),
chart.time
);
} else if (yAxis.isDatetimeAxis) {
formattedValue = chart.time.dateFormat(
chart.time.resolveDTLFormat(yAxisOptions.dateTimeLabelFormats[
yAxis.tickPositions.info.unitName
]).main,
this.y
);
} else if (yAxisOptions.categories) {
formattedValue = yAxisOptions.categories[this.y];
} else {
formattedValue = this.y;
}
config.formattedValue = config.point.formattedValue = formattedValue;
}
return config;
}
['line', 'spline'].forEach(function (seriesName) {
wrap(
H.seriesTypes[seriesName].prototype.pointClass.prototype,
'getLabelConfig',
addFormattedValue
);
});