p">)</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span></span>
<span>  <span class="fu"><a href="https://dplyr.tidyverse.org/reference/group_map.html" class="external-link">group_modify</a></span><span class="op">(</span><span class="op">~</span> <span class="fu">ggplot2</span><span class="fu">:::</span><span class="fu">compute_density</span><span class="op">(</span><span class="va">.x</span><span class="op">$</span><span class="va">S