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Having a hard time to get a raster from a polygon
ST_AsRaster(ST_Buffer(ST_GeomFromText('POLYGON((-30 40, -20 30, -25 20, -23 10, -30 40))', 4326), 50),ARRAY['8BUI'],ARRAY[118]);
This line is giving me an error : No function matches the given name and argument types. You might need to add explicit type casts.
You are missing pixel dimensions:
CREATE EXTENSION IF NOT EXISTS postgis_raster;
SELECT ST_AsRaster(
ST_Buffer(ST_GeomFromText('POLYGON((-30 40, -20 30, -25 20, -23 10, -30 40))', 4326), 50),
100, -- width
100, -- height
ARRAY['8BUI'], -- pixeltype
ARRAY[118] -- value
); -- using ST_AsRaster signature (geometry,int,int,text[],float[])
In this example you can use also the signature (geometry,int,int,text,float).
