Fig. 2: Ethnoracial distributions in census tracts within the New Haven-Milford, Connecticut metropolitan area.
From: Spatial regionalization based on optimal information compression
Census tracts are delineated with thin black borders and inferred cluster boundaries from the minimum description length regionalization algorithm are shown with thick black borders for each decade a 1980, b 1990, c 2000, d 2010. Colored points are distributed at random within each tract and each color covers an area proportional to the fraction of the population within the tract that falls under the corresponding ethnoracial category. The inverse compression ratio η (Eq. (18)) and the optimal number of clusters K are shown for each decade.
