ss="line">3*D* <em>array</em>, <em>linear</em> <em>indices</em> [24 <em>x</em> 1|*nMembers* <em>x</em> <em>nEvolving</em>]</div>
<div class="line">Indicates which state vector rows to use for different ensembles in an evolving set. Should be a 3D array, and the number of elements along the third dimension should match the number of ensembles in the evolving set. If the second dimension has a length of 1, uses the same rows for all the ensemble members in each evolving ensemble. If the second dimension has a