_mfd</a></span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">ids</span> <span class="op">&lt;-</span> <span class="va">mfdobj</span><span class="op">$</span><span class="va">fdnames</span><span class="op">[[</span><span class="fl">2</span><span class="op">]</span><span class="op">]</span></span></span>
<span class="r-in"><span><span class="va">df</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/data.frame.html"