lass="op">(</span><span class="va">key</span>, <span class="va">sf_bna</span><span class="op">$</span><span class="va">AREAKEY</span><span class="op">)</span>, <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"AREAKEY"</span><span class="op">)</span><span class="op">]</span></span>
<span><span class="va">sf_bna2</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rspatial.github.io/terra/reference/merge.ht