Sankey diagram

author(s): Torstein Hønsi

by koh_edwin

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/sankey.js"></script>

<div id="container"></div>

CSS

#csv {
	display: none;
}

.highcharts-figure, .highcharts-data-table table {
    min-width: 310px;
    max-width: 800px;
    margin: 1em auto;
}

.highcharts-data-table table {
	font-family: Verdana, sans-serif;
	border-collapse: collapse;
	border: 1px solid #EBEBEB;
	margin: 10px auto;
	text-align: center;
	width: 100%;
	max-width: 500px;
}
.highcharts-data-table caption {
    padding: 1em 0;
    font-size: 1.2em;
    color: #555;
}
.highcharts-data-table th {
	font-weight: 600;
    padding: 0.5em;
}
.highcharts-data-table td, .highcharts-data-table th, .highcharts-data-table caption {
    padding: 0.5em;
}
.highcharts-data-table thead tr, .highcharts-data-table tr:nth-child(even) {
    background: #f8f8f8;
}
.highcharts-data-table tr:hover {
    background: #f1f7ff;
}

JavaScript

var headers = ['some text 1', 'some text 2', 'some text 3']

Highcharts.chart('container', {
  chart: {
    marginTop: 100,
    events: {
      render: function() {
        var chart = this,
          series = chart.series[0],
          columns = series.nodeColumns,
          isFirst,
          isLast,
          xPos;

        if (!series.customHeaders) {
          series.customHeaders = [];
        }

        columns.forEach(function(column, i) {
          xPos = column[0].nodeX + chart.plotLeft;
          if(i==1){
          var yPos = column[0].nodeY
          console.log(column)
          }
          isFirst = i === 0;
          isLast = i === columns.length - 1;

          if (!series.customHeaders[i]) {
            series.customHeaders.push(
              chart.renderer.text(
                headers[i],
                xPos,
                80
              ).attr({
                translateX: isFirst ? 0 : (
                  isLast ?
                  series.options.nodeWidth :
                  series.options.nodeWidth / 2
                ),
                align: isFirst ? 'left' : (
                  isLast ? 'right' : 'center'
                )
              }).add()
            )
          } else {
            series.customHeaders[i].attr({
              x: xPos
            });
          }
        });

      }
    }
  },
  series: [{
    keys: ['from', 'to', 'weight'],
    data: [
      ['Brazil', 'Portugal', 5],
      ['Brazil', 'France', 1],
      ['Brazil', 'Spain', 1],
      ['Brazil', 'England', 1],
      ['Canada', 'Portugal', 1],
      ['Canada', 'France', 5],
      ['Canada', 'England', 1],
      ['Mexico', 'Portugal', 1],
      ['USA', 'Portugal', 1],
      ['USA', 'France', 1],
      ['USA', 'Spain', 1],
      ['USA', 'England', 5],
      ['Portugal', 'Angola', 2],
      ['Portugal', 'Senegal', 1],
      ['Portugal', 'Morocco', 1],
      ['Portugal', 'South Africa', 3],
      ['France', 'Angola', 1],
      ['France', 'Senegal', 3],
     ...