is exactly equal to its value.

Shape-warping contiguous cartograms

Also called irregular cartograms or deformation cartograms, This is a family of very different algorithms that scale and deform the shape of each district while maintaining adjacent edges. This approach has its roots in the early 20th Century cartograms of Haack and Weichel and others, although these were rarely as mathematically precise as current computerized versions. The variety of approaches that have been proposed include cellular automata,

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