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- <!doctype html>
- <html>
- <head>
- <title>Network | Clustering</title>
-
- <script type="text/javascript" src="../../../dist/vis.js"></script>
- <link href="../../../dist/vis-network.min.css" rel="stylesheet" type="text/css"/>
-
- <style type="text/css">
- #mynetwork {
- width: 600px;
- height: 600px;
- border: 1px solid lightgray;
- }
-
- p {
- max-width: 600px;
- }
-
- h4 {
- margin-bottom: 3px;
- }
- </style>
- <script src="../../googleAnalytics.js"></script>
- </head>
-
- <body>
-
-
- <p>
- You can zoom in and out to cluster/decluster.
- </p>
- Stabilize when clustering:<input type="checkbox" id="stabilizeCheckbox">
- <div id="mynetwork"></div>
-
- <script type="text/javascript">
- var clusterIndex = 0;
- var clusters = [];
- var lastClusterZoomLevel = 0;
- var clusterFactor = 0.9;
-
- // create an array with nodes
- var nodes = [
- {id: 1, label: 'Node 1'},
- {id: 2, label: 'Node 2'},
- {id: 3, label: 'Node 3'},
- {id: 4, label: 'Node 4'},
- {id: 5, label: 'Node 5'},
- {id: 6, label: 'Node 6'},
- {id: 7, label: 'Node 7'},
- {id: 8, label: 'Node 8'},
- {id: 9, label: 'Node 9'},
- {id: 10, label: 'Node 10'}
- ];
-
- // create an array with edges
- var edges = [
- {from: 1, to: 2},
- {from: 1, to: 3},
- {from: 10, to: 4},
- {from: 2, to: 5},
- {from: 6, to: 2},
- {from: 7, to: 5},
- {from: 8, to: 6},
- {from: 9, to: 7},
- {from: 10, to: 9}
- ];
-
- // create a network
- var container = document.getElementById('mynetwork');
- var data = {
- nodes: nodes,
- edges: edges
- };
- var options = {layout: {randomSeed: 8}, physics:{adaptiveTimestep:false}};
- var network = new vis.Network(container, data, options);
-
- // set the first initial zoom level
- network.once('initRedraw', function() {
- if (lastClusterZoomLevel === 0) {
- lastClusterZoomLevel = network.getScale();
- }
- });
-
- // we use the zoom event for our clustering
- network.on('zoom', function (params) {
- if (params.direction == '-') {
- if (params.scale < lastClusterZoomLevel*clusterFactor) {
- makeClusters(params.scale);
- lastClusterZoomLevel = params.scale;
- }
- }
- else {
- openClusters(params.scale);
- }
- });
-
- // if we click on a node, we want to open it up!
- network.on("selectNode", function (params) {
- if (params.nodes.length == 1) {
- if (network.isCluster(params.nodes[0]) == true) {
- network.openCluster(params.nodes[0])
- }
- }
- });
-
-
- // make the clusters
- function makeClusters(scale) {
- var clusterOptionsByData = {
- processProperties: function (clusterOptions, childNodes) {
- clusterIndex = clusterIndex + 1;
- var childrenCount = 0;
- for (var i = 0; i < childNodes.length; i++) {
- childrenCount += childNodes[i].childrenCount || 1;
- }
- clusterOptions.childrenCount = childrenCount;
- clusterOptions.label = "# " + childrenCount + "";
- clusterOptions.font = {size: childrenCount*5+30}
- clusterOptions.id = 'cluster:' + clusterIndex;
- clusters.push({id:'cluster:' + clusterIndex, scale:scale});
- return clusterOptions;
- },
- clusterNodeProperties: {borderWidth: 3, shape: 'database', font: {size: 30}}
- }
- network.clusterOutliers(clusterOptionsByData);
- if (document.getElementById('stabilizeCheckbox').checked === true) {
- // since we use the scale as a unique identifier, we do NOT want to fit after the stabilization
- network.setOptions({physics:{stabilization:{fit: false}}});
- network.stabilize();
- }
- }
-
- // open them back up!
- function openClusters(scale) {
- var newClusters = [];
- var declustered = false;
- for (var i = 0; i < clusters.length; i++) {
- if (clusters[i].scale < scale) {
- network.openCluster(clusters[i].id);
- lastClusterZoomLevel = scale;
- declustered = true;
- }
- else {
- newClusters.push(clusters[i])
- }
- }
- clusters = newClusters;
- if (declustered === true && document.getElementById('stabilizeCheckbox').checked === true) {
- // since we use the scale as a unique identifier, we do NOT want to fit after the stabilization
- network.setOptions({physics:{stabilization:{fit: false}}});
- network.stabilize();
- }
- }
-
-
- </script>
-
- </body>
- </html>
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