stat <span class="op">=</span> <span class="st">"alluvium"</span><span class="op">)</span></span></span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span class="warning">Warning: </span>Ignoring unknown aesthetics: <span style="color: #00BB00;">order</span></span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span class="warning">Warning: </span>Using alpha for a discrete variable is not advised.</span>
<span class="r-plt img"><img src="stat_alluvium-4.png" alt="" width="700" height="4