 clusters.</p></dd>


<dt><code>clusters</code></dt>
<dd><p>An integer vector representing the cluster number for each voxel
in the mask.</p></dd>


<dt><code>label_map</code></dt>
<dd><p>A named list where each element represents a cluster and its name.</p></dd>


<dt><code>cluster_map</code></dt>
<dd><p>An <code>environment</code> object that maps from cluster id to the
set of 1D spatial indices belonging to that cluster.</p></dd>


</dl></div>
    <div class="section level2">
    <h2 id="methods">Methods