In the last recipe, we used the geometries to filter and clip rasters only to the areas of interest. The functions
ST_Intersects() implicitly converted the geometry before relating it to the raster.
PostGIS provides several functions for converting rasters to geometries. Depending on the function, a pixel can be returned as an area or a point.
PostGIS provides one function for converting geometries to rasters.
In this recipe, we will convert rasters to geometries and geometries to rasters. We will use the
ST_PixelsAsPolygons() functions to convert rasters to geometries. We will then convert geometries to rasters using
Let's adapt ...