html" class="external-link">plot</a>()</code> if <span class="pkg">Rgraphviz</span> is installed.</p>
    </div>
    <div class="section level2">
    <h2 id="note">Note<a class="anchor" aria-label="anchor" href="#note"></a></h2>
    <p>This function requires the Bioconductor package <span class="pkg">graph</span>.
If <span class="pkg">graph</span> is not installed, an informative error is raised.
Plotting also requires <span class="pkg">Rgraphviz</span>, but all functionality of
<code>graph_pairs()</code> i