javascript - Use of rowspan to group hierarchical data

Question

Is it possible to group data (using rowspan as explained here) in a table rendered with angularjs. Data is hierarchical, with state having many counties and each counties has multiple zipcodes. I want a table with only column for state, county, zip etc (so give a rowspan for length of the collection). I am not sure ng-repeat-start and ng-repeat-end can be used to achieve this. Please see the starter template here

 <table>
    <thead>
      <tr>
        <th>State</th>
        <th>County</th>
        <th>Zip</th>
      </tr>
    </thead>
    <tbody>
      <tr ng-repeat='st in states'>
        <td>{{st.name}}</td>
        <td></td>
        <td></td>
      </tr>
    </tbody>
  </table>

data

 var oh_counties = [
    {name: "Franklin", zips: [111,222,333,444,555]},
    {name: "Adams", zips: [111,222,333,444]},
    {name: "Allen", zips: [111,222,333]}
    ],
    wi_counties = [
    {name: "Dane", zips: [111]},
    {name: "Adams", zips: [111,222,333,444]}
    ]

    $scope.states = [
      {name: "OH", counties: oh_counties},
      {name: "WI", counties: wi_counties},
      ];

Edit:

A handcrafted version of the desired output is here http://plnkr.co/edit/T7toND0odx6qr8mVC121?p=preview

Answer 1

This is a variant of Holly Cummins' answer. The repeat is moved into the tr with ng-repeat-start and ng-repeat-end to prevent the tbody from being repeated. Also uses a slightly different method to hide the first row.

<tbody>
    <tr ng-repeat-start='st in states'>
      <th rowspan="{{st.counties.length}}">{{st.name}}</th>
      <td>{{st.counties[0].name}}</td>
    </tr>
    <tr ng-repeat-end ng-repeat='county in st.counties' ng-hide="$first">
       <td>{{county.name}}</td>
    </tr>
</tbody>