    <p><code>prepare_graph</code> constructs a graph based on mother, father, and offspring links.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">prepare_graph</span><span class="op">(</span></span>
<span>  <span class="va">.tbl</span>,</span>
<span>  <span class="va">icol</span>,</span>
<span>  <span class="va">fcol</span>,</span>