op">)</span><span class="op">)</span>,</span>
<span>     col <span class="op">=</span> <span class="st">"blue"</span>, add <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></code></pre></div>
<p><img src="indexing_files/figure-html/disamb-1.png" width="576"></p>
<div class="sourceCode" id="cb11"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span></span>
<span><span class="va">unique_index</span></span>
<span><span class="co">#&gt; Simple feature collecti