-link">aes</a></span><span class="op">(</span>colour <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/numeric.html" class="external-link">as.numeric</a></span><span class="op">(</span><span class="va">mpg</span><span class="op">)</span><span class="op">)</span>, size <span class="op">=</span> <span class="fl">1</span>, overplot <span class="op">=</span> <span class="st">"none"</span><span class="op">)</span> <span class="op">+</span></span>
<span>  <span class="fu"><a href="https:/