   </span>
<span class="r-msg co"><span class="r-pr">#&gt;</span>   fortify.SpatialPolygonsDataFrame ggplot2</span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> </span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> The 'mosaic' package masks several functions from core packages in order to add </span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> additional features.  The original behavior of these functions should not be affected by this.</span>
<span class="r-msg co"><span clas