title: Ng-grid and sorting array data
body: <p>I'm using ng-grid where the data source is an array of arrays like so</p>
  
  <pre><code> $scope.myData = [
        ["Moroni", "M"],
        ["Tiancum", "T"],
        ["Jacob", "J"],
        ["Nephi", "N"],
        ["Enos", "E"]
      ]
  </code></pre>
  
  <p>The full example can be found on this plunker <a href="http://plnkr.co/edit/LK6RNzagHEEoHmMKB1Ri?p=preview" rel="nofollow">http://plnkr.co/edit/LK6RNzagHEEoHmMKB1Ri?p=preview</a></p>
  
  <p>The actual problem is that the data does not sort while the user clicks the column headers. Is this the expected behaviour? Is there a way to get the data to sort when you click a column?</p>
  
  <p>Thanks</p>