class="op">=</span> <span class="va">Petal.Length</span><span class="op">)</span>, </span>
<span>    alpha <span class="op">=</span> <span class="fl">.2</span>, point_alpha <span class="op">=</span> <span class="fl">1</span>, jittered_points <span class="op">=</span> <span class="cn">TRUE</span></span>
<span>  <span class="op">)</span> <span class="op">+</span></span>
<span>  <span class="fu"><a href="../reference/scale_point.html">scale_point_color_hue</a></span><span class="op">(</span>l <span class="op">