"op">)</span><span class="op">)</span><span class="op">)</span><span class="op">/</span><span class="va">reps</span></span></code></pre></div>
<pre><code><span><span class="co">##    user  system elapsed </span></span>
<span><span class="co">##  0.0263  0.0000  0.0265</span></span></code></pre>
<p>The WGS84 ellipsoid Great Circle distances differ a very little from
the <strong>s2</strong> spherical distances, yielding output that here
diverges for two tract centroids:</p>
<div class="sourceCode" id="cb61"><