[postgis-users] Retrieving Data from PostGIS Raster using ST_Value

elliott elliott at cpi.com
Wed Oct 12 06:04:31 PDT 2011

Hello Everyone,

I am very new to using PostGIS Raster.  I need to retrieve data fields 
from a tile loaded into the database.  Using ST_Height and ST_Width, I 
get the number of rows and columns and iterate over these using the 
ST_Value to retrieve the data.  This is extremely slow taking 1/2 hour 
to get all of the data required.  Is there a faster way to accomplish this?


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