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Radius

Node size is controlled by the radius attribtue.

Open in a new window.
          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../build/ogma.min.js"></script>
  <style>
    #graph-container { top: 0; bottom: 0; left: 0; right: 0; position: absolute; margin: 0; overflow: hidden; }
  </style>
</head>
<body>
  <div id="graph-container"></div>

<script>
'use strict';

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

// Specify a random size for each node.
ogma.styles.addNodeRule({
  radius: function (n) { return 3 + (n.getId() % 10); }
});

// Generate a random graph.
ogma.generate.random({ nodes: 50, edges: 0 })
  .then(function (graph) {

    // Assign the graph to Ogma.
    ogma.setGraph(graph);
    ogma.view.locateGraph();

    // Change the size of a single node and its color to purple.
    ogma.getNode('0')
      .setAttributes({ radius: 5, color: 'purple' });

    // Change the size of two nodes and their color to orange.
    ogma.getNodes({ids: ['1','2']})
      .setAttributes({ radius: 8, color: 'orange' });
});
</script>
</body>
</html>