Highcharts Demo

author(s): Torstein Hønsi

by wergeld

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://cdn.rawgit.com/anomal/RainbowVis-JS/master/rainbowvis.js"></script>
<div id="container" style="height: 400px"></div>

JavaScript

$(function() {
  var chart = new Highcharts.Chart({
    chart: {
      renderTo: 'container',
      type: 'column',
      events: {
        load: function() {
          var rainbow = new Rainbow();
          // Set start and end colors
          rainbow.setSpectrum('#e2535c', '#ea9056');
          
					// Set the min/max range
          var theData = this.series[0].data;
          var rangeLow = 0;
          var rangeHigh = theData.length
          rainbow.setNumberRange(rangeLow, rangeHigh);
          
          // Loop over data points and update the point.color value
          for (index = 0; index < theData.length; ++index) {

            this.series[0].data[index].update({
              color: '#' + rainbow.colourAt(index)
            });
          }
        }
      }
    },
    xAxis: {
      categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
    },
    yAxis: {},
    plotOptions: {
      column: {
        colorByPoint: true
      }
    },
    series: [{
      data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]
  });
});