Network / Force Directed Graph - Highcharts

author(s): Paweł Fus

by jeffgw

HTML

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

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

CSS

#container {
	min-width: 320px;
	max-width: 800px;
	margin: 0 auto;
}

JavaScript

// Add the nodes option through an event call. We want to start with the parent
// item and apply separate colors to each child element, then the same color to
// grandchildren.
Highcharts.addEvent(
    Highcharts.seriesTypes.networkgraph,
    'afterSetOptions',
    function (e) {
        var colors = Highcharts.getOptions().colors,
            i = 0,
            nodes = {};
        e.options.data.forEach(function (link) {

            if (link[0] === 'Proto Indo-European') {
                nodes['Proto Indo-European'] = {
                    id: 'Proto Indo-European',
                    marker: {
                        radius: 20
                    }
                };
                nodes[link[1]] = {
                    id: link[1],
                    marker: {
                        radius: 15
                    },
                    color: 'red'
                };
            } else if (nodes[link[0]] && nodes[link[0]].color) {
                nodes[link[1]] = {
                    id: link[1],
                    marker: {
                        radius: 4
                    },
                    color: nodes[link[0]].color
                };
            }
        });

        e.options.nodes = Object.keys(nodes).map(function (id) {
            return nodes[id];
        });
        
        console.log(e);
    }
);

Highcharts.chart('container', {
    chart: {
        type: 'networkgraph',
        height: '100%'
    },
    title: {
        text: 'The Indo-European Laungauge Tree'
    },
    subtitle: {
        text: 'A Force-Directed Network Graph in Highcharts'
    },
    plotOptions: {
        networkgraph: {
            keys: ['from', 'to'],
            layoutAlgorithm: {
                enableSimulation: true
            }
        }
    },
    series: [{
        dataLabels: {
            enabled: true
        },
        data: [
            ['Proto Indo-European', 'Balto-Slavic'],
            ['Proto Indo-European', 'Germanic'],
           ...