r-in"><span></span></span>
<span class="r-in"><span><span class="co"># create problem with a maximum phylogenetic diversity objective,</span></span></span>
<span class="r-in"><span><span class="co"># where each feature needs 10% of its distribution to be secured for</span></span></span>
<span class="r-in"><span><span class="co"># it to be adequately conserved and a total budget of 1900</span></span></span>
<span class="r-in"><span><span class="va">p1</span> <span class="op">&lt;-</span></span></span>
<span 