Performance (Cosmic Web)

It loads a large graph exported from the Gephi software. The dataset comes from the "Cosmic Web" study of the network of galaxies. See cosmicweb.barabasilab.com.
          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../build/ogma.min.js"></script>
  <style>
   body { background-color: #000; }
    #graph-container { top: 0; bottom: 0; left: 0; right: 0; position: absolute; margin: 0; overflow: hidden; }
    .info {
      position: absolute;
      color: #fff;
      background: #141229;
      font-size: 12px;
      font-family: monospace;
      padding: 5px;
    }
    .info.n { top: 0; left: 0; }
    .info.e { top: 20px; left: 0; }
  </style>
</head>
<body>
  <div id="graph-container"></div>
  <div id="n" class="info n">loading a large graph, it can take a few seconds...</div>
  <div id="e" class="info e"></div>

<script>
'use strict';

var ogma = new Ogma({
  container: 'graph-container'
});

ogma.setOptions({
  detect: {
    // disable the detection of edges and texts, making them impossible to hover or select.
    // edges: false,
    // nodes: false,
    nodeTexts: false,
    edgeTexts: false
  },
  interactions: {
    drag: {
      //enabled: false // disable node dragging
    }
  }
});

ogma.styles.addNodeRule({
  text: {
    size: 12,
    content: function(node) { return node.getId(); }
  },
  innerStroke: {
    minVisibleSize: 5,
    width: 1,
    color: 'black'
  }
});

ogma.styles.addEdgeRule({
  minVisibleSize: 0.3,
  color: 'source'
});

ogma.parse.gexfFromUrl('files/ccnr-universe-fa2-ncolorModularity-nsizeBeteewnessCentrality.gexf').then(function(g) {
  ogma.setGraph(g);
  ogma.view.locateGraph();

  document.getElementById('n').textContent = 'nodes: ' + ogma.getNodes().size;
  document.getElementById('e').textContent = 'edges: ' + ogma.getEdges().size;
});

// TODO: highlight neighbors or selected node

</script>
</body>
</html>