title: Google linechart visualization chart disappears when updating it?
body: <p>I want to be able to update the line chart of google visualizations. My code was inspired by <a href="https://stackoverflow.com/questions/1200917/trying-to-update-a-google-visualization-using-jquery">this Stack Overflow post</a>.</p>
  
  <p>Here is my code in question:</p>
  
  <p><a href="http://jsfiddle.net/YCqyG/5/" rel="nofollow noreferrer">http://jsfiddle.net/YCqyG/5/</a></p>
  
  <p>You'll see that when you click the button titled "click", the chart suddenly disappears.</p>
  
  <hr>
  
  <p><strong>UPDATE:</strong>
  When I comment out this line, it appears to be working:</p>
  
  <pre><code>// this.element.html('');
  </code></pre>
  
  <p>And it does not appear to work for the line chart. Any idea why it won't work for the line chart?</p>