Experimental isarithmic maps visualise electoral data

Experimental isarithmic maps visualise electoral data

From the post:

David B. Sparks, a fifth-year PhD candidate in the Department of Political Science at Duke University, has today published a fascinating set of experiments using ‘Isarithmic’ maps to visualise US party identification. Isarithmic maps are essentially topographic/contour maps and offer an alternative approach to plotting geo-spatial data using choropleth maps. This is a particularly interesting approach for the US with its extreme population patterns.

Very impressive work. Read this post and then David’s original.


Choropleth maps use city, county, etc. boundaries, within which colors appear.

Isarithmic maps use color to present the same information but without the legal boundaries that appear in choropleth maps.

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