n class="r-pr">#&gt;</span> <span style="color: #949494;"># ℹ 90 more rows</span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># assign lon-lat points to a 10km space-only grid</span></span></span>
<span class="r-in"><span><span class="va">points_ll</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span>longitude <span class="op">=</span> <span cla