nchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">set_dispersal</span><span class="op">(</span></span>
<span>  <span class="va">pop</span>,</span>
<span>  <span class="va">time</span>,</span>
<span>  competition <span class="op">=</span> <span class="cn">NA</span>,</span>
<span>  mating <span class="op">=</span> <span class="cn">NA</span>,</span>
<span>  dispersal <span class="op">=</span> <span class="cn">NA</span>,</span>
<span>  dispersa