th the names of the variables to be
plotted (optional).</p></dd>


<dt id="arg-bars">bars<a class="anchor" aria-label="anchor" href="#arg-bars"></a></dt>
<dd><p>Atomic character, indicating what separate bars represent. One of
<code>c("Variable", "group", "class")</code>.</p></dd>


<dt id="arg-facet">facet<a class="anchor" aria-label="anchor" href="#arg-facet"></a></dt>
<dd><p>Atomic character, indicating what separate facets represent. One
of <code>c("group", "class", "Variable")</code>.</p></dd>


<dt id