March 2018
Beginner to intermediate
584 pages
14h 31m
English
book
PostGIS Cookbook - Second Edition
by Stephen Vincent Mather, Pedro Wightman, Bborie Park, Thomas Kraft, Mayra Zurbarán, Paolo Corti
Content preview from PostGIS Cookbook - Second Edition
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Measuring distances
In this recipe, we will check out the PostGIS functions needed for distance measurements (ST_Distance and its variants) and find out how considering the earth's curvature makes a big difference when measuring distances between distant points.