ackage@FrameGrouper[Z,X,Y,T]extendsAnyRef" title="Permalink" target="_top">
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      <p class="shortcomment cmt">Helper class to do combine or transform after a groupBy
</p>
    </li><li name="org.saddle.groupby.IndexGrouper" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
      <a id="IndexGrouper[Y]extendsAnyRef"></a>
      <a id="IndexGrouper[Y]:IndexGrouper[Y]"></a>
      <h4 class="signature">
      <span class="mod