ix should
be provided in the order of the original data order (and it will be re-ordered automatically to
the order of the dendrogram)</p></dd>


<dt id="arg-dend">dend<a class="anchor" aria-label="anchor" href="#arg-dend"></a></dt>
<dd><p>a dendrogram object. If missing, the colors are plotted without and re-ordering
(this assumes that the colors are already ordered based on the dend's labels)
This is also important in order to get the correct height/location of the colored dots
(i.e.: adjusting the y_scal