class="co"># S3 method for class 'mfdata'</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/names.html" class="external-link">names</a></span><span class="op">(</span><span class="va">x</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># S3 method for class 'mfdata'</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op">(</span><span class="va">x</span>, <span class="va">subset</sp