A hierarchy is a structure describing the relationship between geographic layers which nest under one another. For example, Census summary levels are part of a hierarchy such that states comprise counties that comprise county subdivisions that comprise Census tracts, etc.
Census Summary Levels are part of a hierarchy.
Maptitude for Redistricting is the professional tool for political redistricting. Designed with input from redistricting professionals, state legislatures, and political parties, Maptitude for Redistricting has the features redistricters want and is easy to learn and use.
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