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120 lines
2.8 KiB
120 lines
2.8 KiB
<!doctype html>
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<html>
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<head>
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<title>Network | Random nodes</title>
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<style type="text/css">
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body {
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font: 10pt sans;
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}
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#mynetwork {
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width: 600px;
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height: 600px;
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border: 1px solid lightgray;
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}
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</style>
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<script type="text/javascript" src="../../dist/vis.js"></script>
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<link href="../../dist/vis.css" rel="stylesheet" type="text/css" />
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<script type="text/javascript">
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var nodes = null;
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var edges = null;
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var network = null;
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function destroy() {
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if (network !== null) {
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network.destroy();
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network = null;
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}
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}
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function draw() {
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destroy();
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nodes = [];
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edges = [];
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var connectionCount = [];
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// randomly create some nodes and edges
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var nodeCount = document.getElementById('nodeCount').value;
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for (var i = 0; i < nodeCount; i++) {
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nodes.push({
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id: i,
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label: String(i)
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});
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connectionCount[i] = 0;
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// create edges in a scale-free-network way
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if (i == 1) {
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var from = i;
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var to = 0;
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edges.push({
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from: from,
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to: to
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});
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connectionCount[from]++;
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connectionCount[to]++;
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}
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else if (i > 1) {
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var conn = edges.length * 2;
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var rand = Math.floor(Math.random() * conn);
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var cum = 0;
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var j = 0;
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while (j < connectionCount.length && cum < rand) {
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cum += connectionCount[j];
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j++;
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}
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var from = i;
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var to = j;
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edges.push({
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from: from,
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to: to
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});
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connectionCount[from]++;
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connectionCount[to]++;
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}
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}
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// create a network
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var container = document.getElementById('mynetwork');
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var data = {
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nodes: nodes,
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edges: edges
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};
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var options = {physics:{stabilization:false}};
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network = new vis.Network(container, data, options);
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// add event listeners
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network.on('select', function(params) {
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document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
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});
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network.on('stabilized', function (params) {
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document.getElementById('stabilization').innerHTML = 'Stabilization took ' + params.iterations + ' iterations.';
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});
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network.on('startStabilization', function (params) {
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document.getElementById('stabilization').innerHTML = 'Stabilizing...';
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});
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}
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</script>
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</head>
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<body onload="draw();">
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<form onsubmit="draw(); return false;">
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<label for="nodeCount">Number of nodes:</label>
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<input id="nodeCount" type="text" value="25" style="width: 50px;">
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<input type="submit" value="Go">
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</form>
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<br>
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<div id="mynetwork"></div>
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<p id="selection"></p>
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<p id="stabilization"></p>
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</body>
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</html>
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