subset</a></span><span class="op">(</span><span class="va">Rohwer</span>, subset<span class="op">=</span><span class="va">group</span><span class="op">==</span><span class="fl">2</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/colnames.html" class="external-link">rownames</a></span><span class="op">(</span><span class="va">Rohwer2</span><span class="op">)</span><span class="op">&lt;-</span> <span class="fl">1</span><span class="op">:</s