.html" class="external-link">head</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>  <span class="fu">check_connectivity</span><span class="op">(</span></span></span>
<span class="r-in"><span>    data <span class="op">=</span> <span class="va">dat</span>,</span></span>
<span class="r-in"><span>    genotype <span class="op">=</span> <span class="st">"gen"</span>,</span></span>
<span class="r-in"><span>    trial <span class="op">=</span> <span class="st">"county"</span>,</span></span