Sorry, I should have explained what I'm trying to do with the query. I'm taking the two rasters density and euclidean, normalising them both before multiplying normalised density by 0.5, multiplying normalised euclidean by 0.3 and then adding these together.
Then I am producing a slope surface, normalising that and then multiplying the normalised slope by 0.2 before using it along with the result of the first calculation to add effectively all three rasters together. Hope this explains better. Kind Regards, James ----- GIS Undergraduate -- View this message in context: http://postgis.17.n6.nabble.com/MapAlgebra-on-three-Rasters-tp4917643p4918408.html Sent from the PostGIS - User mailing list archive at Nabble.com. _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
