2D array $Index in AngularJS

Haha, well, it was answered in the comments while I was putting together my fiddle, but here's a demonstration of it for people finding this question down the road:

http://jsfiddle.net/5s6z1dfc/2/

<div ng-controller="MyCtrl">
  <table>
      <tr ng-repeat="row in data">
         <td ng-repeat="cell in row">
             {{cell}} ({{$index}},{{$parent.$index}})
          </td>
      </tr>
    </table>
</div>