ss="op">(</span><span class="va">x</span>, collapse <span class="op">=</span> <span class="st">"; "</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="stat_alluvium-9.png" alt="" width="700" height="433"></span>
<span class="r-in"><span><span class="co"># }</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># \donttest{</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr