/span><span class="op">(</span><span class="va">NY8_sf_old</span><span class="op">)</span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">## </span></span>
<span><span class="co">## FALSE  TRUE </span></span>
<span><span class="co">##     5   276</span></span></code></pre>
<p>We can see that there are a number of differences between the
neighbour sets derived from the fully valid geometries and the older
partly invalid set:</p>
<div class="sourceCode" id="cb14"><pre cla