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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Getting ready
In this recipe, we will convert rasters to geometries, and geometries to rasters. We will use the ST_DumpAsPolygons() and ST_PixelsAsPolygons() functions to convert rasters to geometries. We will then convert geometries to rasters using ST_AsRaster().