span class='no'>beetles</span> ~ <span class='no'>.</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>plants</span>, <span class='kw'>method</span> <span class='kw'>=</span> <span class='st'>"symmetric"</span>)</div><div class='output co'>#&gt; <span class='message'></span>
#&gt; <span class='message'>Removed some species that contained no data in: beetles, plants </span></div><div class='input'><span class='no'>bp.sym</span></div><div class='output co'>#&gt; 
#&gt; Symmetric C