D3 Examples - vega-lite test2

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<!DOCTYPE html>
  <head>
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/vega/3.0.0-beta.30/vega.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/vega-lite/2.0.0-beta.1/vega-lite.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/vega-embed/3.0.0-beta.11/vega-embed.js"></script>
  </head>
  
  <body>
    <button onclick="changeData()">Change Data</button>
    <button onclick="createChart('bar')">Bar Chart</button>
    <button onclick="createChart('circle')">Dot Chart</button>
    <div id="vis"></div>
    
    <script src="main.js"></script>
  </body>
​
    