Sankey diagram

author(s): Torstein Hønsi

by djakacki

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', {

    title: {
        text: 'Estimated US Energy Consumption in 2017'
    },
    subtitle: {
        text:
      'Source: <a href=\'https://www.llnl.gov/\'> Lawrence Livermore National Laboratory</a>'
    },
    accessibility: {
        point: {
            valueDescriptionFormat: '{index}. {point.from} to {point.to}, {point.weight}.'
        }
    },
    tooltip: {
        headerFormat: null,
        pointFormat:
      '{point.fromNode.name} \u2192 {point.toNode.name}: {point.weight:.2f} quads',
        nodeFormat: '{point.name}: {point.sum:.2f} quads'
    },
    series: [{
        keys: ['from', 'to', 'weight'],

        nodes: [
            {
                id: 'Electricity & Heat',
                color: '#ffa500',
                offset: -110
            },
            {
                id: 'Residential',
                color: '#74ffe7',
                column: 2,
                offset: 50
            },
            {
                id: 'Commercial',
                color: '#8cff74',
                column: 2,
                offset: 50
            },
            {
                id: 'Industrial',
                color: '#ff8da1',
                column: 2,
                offset: 50
            },
            {
                id: 'Transportation',
                color: '#f4c0ff',
                column: 2,
                offset: 50
            },
            {
                id: 'Rejected Energy',
                color: '#e6e6e6',
                column: 3,
                offset: -30
            },
            {
                id: 'Energy Services',
                color: '#F9E79F',
                column: 3
            },
            {
                id: 'Solar',
                color: '#009c00'
            },
            {
                id: 'Nuclear',
                color: '#1a8dff'
            },
            {
                id: 'Hydro',
                color: '#009c00'
            },
            {
        ...