What is a Hierarchy?
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.
Software for Redistricting
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.