ursor is within an alluvium polygon&gt;'</span><span class="op">)</span> <span class="op">{</span>
          <span class="st">'&lt;Render alluvium tooltip.&gt;'</span>
        <span class="op">}</span>
      <span class="op">}</span>
    <span class="op">}</span>
  <span class="op">}</span><span class="op">)</span>
  
<span class="op">}</span></code></pre></div>
<p>First, we create the <code>ggplot</code> object for the alluvial plot, then we call the <code>ggplot_build()</code> function to build the plot w