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        <img src="../../../lib/permalink.png" />
      </a>
    </span>
      <p class="shortcomment cmt">Creates groups for each unique key in an index
</p>
    </li><li name="org.saddle.groupby.SeriesGrouper" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
      <a id="SeriesGrouper[Y,X,T]extendsIndexGrouper[Y]"></a>
      <a id="SeriesGrouper[Y,X,T]:SeriesGrouper[Y,X,T]"></a>
      <h4 class="signature">
      <span class="modifier_kind">
        <span class="modif