<div class="figure" style="text-align: center">
<img src="figures/us-regions-1.png" alt="Spatial aggregation on contiguous polygons, illustrated by aggregating the population of US states into regions, with population represented by color. Note the operation automatically dissolves boundaries between states." width="100%" />
<p class="caption">(\#fig:us-regions)Spatial aggregation on contiguous polygons, illustrated by aggregating the population of US states into regions, with population represented by color. Note the operation automatically dissolves boundaries between states.</p>
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