n class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> preselected_sites:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Empty</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> region:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  class       : SpatVector </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  geometry    : polygons </s