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Building and Using Topologies

From PostGIS in Action, Third Edition by Leo S. Hsu and Regina O. Obe

In this article, you’ll learn what a topology is, how to build a topology from scratch, and how to use commonly available geometry data.

Take 40% off PostGIS in Action, Third Edition by entering fccobe into the discount code box at checkout at

Topological representation recognizes that, in reality, geometric features rarely exist independently of each other. When…




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