</span>, <span class="fl">0</span><span class="op">)</span><span class="op">)</span>
    
    <span class="co"># Build the plot. Use global assignment so that this object is accessible</span>
    <span class="co"># later.</span>
    <span class="va">pbuilt</span> <span class="op">&lt;&lt;-</span> <span class="fu">ggplot_build</span><span class="op">(</span><span class="va">p</span><span class="op">)</span>
    
    <span class="co"># Use built plot data to recalculate the locations of the flow polygons:</sp