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| (function (Highcharts) {
| var seriesTypes = Highcharts.seriesTypes,
| each = Highcharts.each;
|
| seriesTypes.heatmap = Highcharts.extendClass(seriesTypes.map, {
| colorKey: 'z',
| useMapGeometry: false,
| pointArrayMap: ['y', 'z'],
| translate: function () {
| var series = this,
| options = series.options,
| dataMin = Number.MAX_VALUE,
| dataMax = Number.MIN_VALUE;
|
| series.generatePoints();
|
| each(series.data, function (point) {
| var x = point.x,
| y = point.y,
| value = point.z,
| xPad = (options.colsize || 1) / 2,
| yPad = (options.rowsize || 1) / 2;
|
| point.path = [
| 'M', x - xPad, y - yPad,
| 'L', x + xPad, y - yPad,
| 'L', x + xPad, y + yPad,
| 'L', x - xPad, y + yPad,
| 'Z'
| ];
|
| point.shapeType = 'path';
| point.shapeArgs = {
| d: series.translatePath(point.path)
| };
|
| if (typeof value === 'number') {
| if (value > dataMax) {
| dataMax = value;
| } else if (value < dataMin) {
| dataMin = value;
| }
| }
| });
|
| series.translateColors(dataMin, dataMax);
| },
|
| getBox: function () {}
|
| });
|
| }(Highcharts));
|
|
