block by mbostock 670b9fe0577a29c39a1803f59c628769

Merged Choropleth

Full Screen

Source: American Community Survey, 2014 5-Year Estimate

A variation of my California population density map using topomerge to combine census tracts in the same density interval. The resulting TopoJSON file is substantially smaller (328K instead of 1.5M), renders faster, and looks better due to fewer antialiasing artifacts!

index.html

package.json

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