op">)</span></span></span>
<span class="r-in"><span><span class="va">coords</span> <span class="op">&lt;-</span> <span class="fu"><a href="index_to_coord-methods.html">index_to_coord</a></span><span class="op">(</span><span class="va">mask_vol</span>, <span class="va">mask_idx</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Cluster the coordinates into 10 groups</span></span></span>
<span class="r-in"><span><span class="fu"><a