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- <!doctype html>
- <html>
- <head>
- <title>Network | Scale free network clustering</title>
-
- <style type="text/css">
- body {
- font: 10pt sans;
- }
- #mynetwork {
- width: 600px;
- height: 600px;
- border: 1px solid lightgray;
- }
- </style>
-
- <script type="text/javascript" src="../../dist/vis.js"></script>
- <link href="../../dist/vis.css" rel="stylesheet" type="text/css" />
-
- <script type="text/javascript">
- var nodes = null;
- var edges = null;
- var network = null;
-
- function destroy() {
- if (network !== null) {
- network.destroy();
- network = null;
- }
- }
-
- function draw() {
- destroy();
-
- nodes = [];
- edges = [];
- var connectionCount = [];
-
- // randomly create some nodes and edges
- var nodeCount = document.getElementById('nodeCount').value;
- for (var i = 0; i < nodeCount; i++) {
- nodes.push({
- id: i,
- label: String(i)
- });
-
- connectionCount[i] = 0;
-
- // create edges in a scale-free-network way
- if (i == 1) {
- var from = i;
- var to = 0;
- edges.push({
- from: from,
- to: to
- });
- connectionCount[from]++;
- connectionCount[to]++;
- }
- else if (i > 1) {
- var conn = edges.length * 2;
- var rand = Math.floor(Math.random() * conn);
- var cum = 0;
- var j = 0;
- while (j < connectionCount.length && cum < rand) {
- cum += connectionCount[j];
- j++;
- }
-
- var from = i;
- var to = j;
- edges.push({
- from: from,
- to: to
- });
- connectionCount[from]++;
- connectionCount[to]++;
- }
- }
-
- // create a network
- var clusteringOn = document.getElementById('clustering').checked;
- var clusterEdgeThreshold = parseInt(document.getElementById('clusterEdgeThreshold').value);
- var container = document.getElementById('mynetwork');
- var data = {
- nodes: nodes,
- edges: edges
- };
- var options = {
- clustering: {
- enabled: clusteringOn,
- clusterEdgeThreshold: clusterEdgeThreshold
- },
- stabilize: false
- };
- network = new vis.Network(container, data, options);
-
- // add event listeners
- network.on('select', function(params) {
- document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
- });
- }
- </script>
- </head>
-
- <body onload="draw();">
- <h2>Clustering - Scale-Free-Network</h2>
- <div style="width:700px; font-size:14px; text-align: justify;">
- This example shows the randomly generated <b>scale-free-network</b> set of nodes and connected edges from example 2.
- By clicking the checkbox you can turn clustering on and off. If you increase the number of nodes to
- a value higher than 100, automatic clustering is used before the initial draw (assuming the checkbox is checked).
- <br />
- <br />
- Clustering is done automatically when zooming out. When zooming in over the cluster, the cluster pops open. When the cluster is very big, a special instance
- will be created and the cluster contents will only be simulated in there. Double click will also open a cluster.
- <br />
- <br />
- Try values of 500 and 5000 with and without clustering. All thresholds can be changed to suit your dataset.
- Experiment with the clusterEdgeThreshold, which increases the formation of clusters when zoomed out (assuming the checkbox is checked).
- </div>
- <br />
- <form onsubmit="draw(); return false;">
- <label for="nodeCount">Number of nodes:</label>
- <input id="nodeCount" type="text" value="125" style="width: 50px;">
- <label for="clustering">Enable Clustering:</label>
- <input id="clustering" type="checkbox" onChange="draw()" checked="true">
- <label for="clusterEdgeThreshold">clusterEdgeThreshold:</label>
- <input id="clusterEdgeThreshold" type="text" value="20" style="width: 50px;">
- <input type="submit" value="Go">
- </form>
- <br>
-
- <div id="mynetwork"></div>
-
- <p id="selection"></p>
- </body>
- </html>
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