 See the 2D plot below for a visualization.</p>
<div class="sourceCode" id="cb2"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class="co">## Plot 2D </span>
<span class="va">ratio</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/with.html" class="external-link">with</a></span><span class="op">(</span><span class="va">ex_array</span>, <span class="fu"><a href="https://rdrr.io/r/base/diff.html" class="external-link">diff</a></span><span class="op">(</