https://ggplot2.tidyverse.org/reference/aes.html">aes</a></span><span class="op">(</span>fill <span class="op">=</span> <span class="va">class</span>, shape <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/grep.html">grepl</a></span><span class="op">(</span><span class="st">"1"</span>, <span class="va">sub_class</span><span class="op">)</span><span class="op">)</span>, size<span class="op">=</span><span class="fl">3</span><span class="op">)</span> <span class="op">+</span>
  <span 