ESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre class="comment"> SS_AGGREGATE  ISI-restricted heirarchical cluster aggregation.
     SPIKES = SS_AGGREGATE(SPIKES) takes and returns a spike-sorting object
     SPIKES after aggregating clusters (requires a previous overclustering
     and an interface energy matrix calculation).  The aggregation tree is
     stored in SPIKES.HIERARCHY.TREE and the new assignments are stored in
     SPIKES.HIERARCHY.AS