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								<!DOCTYPE HTML>
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								<html>
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								<head>
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								  <title>Timeline | Group example</title>
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								  <style>
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								    body, html {
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								      font-family: arial, sans-serif;
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								      font-size: 11pt;
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								    }
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								    #visualization {
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								      box-sizing: border-box;
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								      width: 100%;
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								      height: 300px;
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								    }
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								  </style>
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								  <!-- note: moment.js must be loaded before vis.js, else vis.js uses its embedded version of moment.js -->
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								  <script src="http://cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.min.js"></script>
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								<body>
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								<p>
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								  This example demonstrate using groups. Note that a DataSet is used for both
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								  items and groups, allowing to dynamically add, update or remove both items
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								  and groups via the DataSet.
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								</p>
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								<div id="visualization"></div>
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								<script>
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								  var now = moment().minutes(0).seconds(0).milliseconds(0);
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								  var groupCount = 3;
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								  var itemCount = 20;
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								  // create a data set with groups
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								  var names = ['John', 'Alston', 'Lee', 'Grant'];
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								  var groups = new vis.DataSet();
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								  for (var g = 0; g < groupCount; g++) {
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								    groups.add({id: g, content: names[g]});
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								  }
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								  // create a dataset with items
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								  var items = new vis.DataSet();
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								  for (var i = 0; i < itemCount; i++) {
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								    var start = now.clone().add(Math.random() * 200, 'hours');
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								    var group = Math.floor(Math.random() * groupCount);
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								    items.add({
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								      id: i,
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								      group: group,
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								      content: 'item ' + i +
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								          ' <span style="color:#97B0F8;">(' + names[group] + ')</span>',
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								      start: start,
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								      type: 'box'
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								    });
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								  }
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								  // create visualization
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								  var container = document.getElementById('visualization');
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								  var options = {
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								    groupOrder: 'content'  // groupOrder can be a property name or a sorting function
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								  };
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								  var timeline = new vis.Timeline(container);
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								  timeline.setOptions(options);
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								  timeline.setGroups(groups);
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								  timeline.setItems(items);
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								</script>
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								</body>
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								</html>
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