butes to store a CRS: <code>epsg</code> and <code>proj4string</code></p>
<div class="fragment">
<div class="cell">
<div class="sourceCode cell-code" id="cb35"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb35-1"><a></a><span class="fu">st_crs</span>(conus)<span class="sc">$</span>epsg</span>
<span id="cb35-2"><a></a><span class="co">#&gt; [1] 4326</span></span>
<span id="cb35-3"><a></a><span class="fu">st_crs</span>(conus)<span class="sc">$</span>pr