Sankey diagram

author(s): Torstein Hønsi

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/sankey.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

<figure class="highcharts-figure">
    <div id="container"></div>
    <p class="highcharts-description">
        Sankey charts are used to visualize data flow and volume
        between nodes. The wider lines indicate larger volumes.
    </p>
</figure>

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

Highcharts.chart('container', {
		chart: {
    marginTop: 100,
    events: {
      render: function() {
    	 var chart = this,
        series = chart.series[0],
        columns = series.nodeColumns;
        
      /*  columns[0][0].visible = false;
        columns[1][0].linksTo[0].visible = false; */
    }
    }
    },

    title: {
        text: 'Highcharts Sankey Diagram'
    },
    accessibility: {
        point: {
            valueDescriptionFormat: '{index}. {point.from} to {point.to}, {point.weight}.'
        }
    },
    series: [{
        keys: ['from', 'to', 'weight'],
        data: [
            ['step1', 'step2', 50],
            ['step2', 'step3', 30],
            ['step3', 'step4', 10],
            ['step3', 'step5', 5],
            ['step4', 'step5', 7], 
            ['step4', 'step6', 0],
            ['step5', 'step6', 0],
        ],
        type: 'sankey',
        name: 'Sankey demo series'
    }]

});