pan class="va">p3</span> <span class="op">&lt;-</span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="problem.html">problem</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>    <span class="va">sim_zones_pu_polygons</span>, <span class="va">sim_zones_features</span>,</span></span>
<span class="r-in"><span>    cost_column <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><