ss="op">)</span> <span class="op">+</span> <span class="fu">geom_dotplot</span><span class="op">(</span>binaxis <span class="op">=</span> <span class="st">"y"</span>, stackdir <span class="op">=</span> <span class="st">"center"</span>,</span>
<span class="r-in">binwidth <span class="op">=</span> <span class="fl">2</span><span class="op">)</span> <span class="op">+</span> <span class="fu">guides</span><span class="op">(</span>fill <span class="op">=</span> <span class="st">"none"</span><span class="op">)</sp