title: Angular nvd3 Stack Area Chart- Expand Option - 0% to 100% range
body: <p>I am having a little trouble with the stacked area chart. The issue when I click the "expand" option. the expand option has a y-axis range of 0% to 100%, yet the values are y * 100%.</p>
  
  <p>For example, take this data set...</p>
  
  <pre><code>x [1,2,3,4,5,6,7]
  
  y [0, 140, 451, 867, 903, 960, 1000]
  
  140 + 451 + 867 + 903 + 960 + 1000 = 4321
  
  960 / 4321 * 100% = 22.21%
  </code></pre>
  
  <p>With the expand option therefore the value 960 is 960% when I want it to equal a the actual percentage of 22.21%.</p>
  
  <ol>
  <li><p>Is there a means in which to format the data such that y value will adjust to a 0%-100% range in the "expand" style?</p></li>
  <li><p>Or, is there a way to listen for when user clicks the "expand" option?</p></li>
  </ol>