strong>ggplot2</strong> and would like to learn it, see <a href="preface.html#ggplot2">1.3.3</a>.<a href="overview.html#fnref7" class="footnote-back">↩︎</a></p></li>
<li id="fn8"><p>See Section <a href="frequencies-2D.html#frequencies-2D">7</a> for approaches using <code>plot_ly()</code><a href="overview.html#fnref8" class="footnote-back">↩︎</a></p></li>
<li id="fn9"><p>As discussed in <a href="custom-geoms.html#custom-geoms">34</a>, <code>ggplotly()</code> can actually convert custom geoms as well,