Tag

postgis

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.

Spatial Reference Systems

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

This article discusses some common spatial reference systems relevant for GIS.

Solving Real-World Geodata Problems

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

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