n>, alpha<span class="op">=</span><span class="fl">0.15</span>, data <span class="op">=</span> <span class="va">df</span><span class="op">)</span> <span class="op">+</span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="https://ggplot2.tidyverse.org/reference/scale_brewer.html" class="external-link">scale_fill_brewer</a></span><span class="op">(</span><span class="op">)</span> <span class="op">+</span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="https://ggplot2.tid