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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How it works...
By using a geometry to filter the rasters in the prism table, only a small set of rasters needed clipping with the geometry and unionizing to compute the mean. This maximized the query performance, and more importantly, provided the answer to our question.