p">=</span> <span class="st">"x"</span>,</span>
<span>  method <span class="op">=</span> <span class="st">"dotdensity"</span>,</span>
<span>  binpositions <span class="op">=</span> <span class="st">"bygroup"</span>,</span>
<span>  stackdir <span class="op">=</span> <span class="st">"up"</span>,</span>
<span>  stackratio <span class="op">=</span> <span class="fl">1</span>,</span>
<span>  dotsize <span class="op">=</span> <span class="fl">1</span>,</span>
<span>  stackgroups <span class="op">=</span> <span cl