class="va">df</span><span class="op">$</span><span class="va">date</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span>
<span>  </span>
<span>  <span class="va">predictors</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://generics.r-lib.org/reference/setops.html" class="external-link">intersect</a></span><span class="op">(</span><span class="va">predictors</span>, <span class="fu"><a href="https://rdrr.io/r/base/names.html" class="external-link">names