Hi all, I have three Raster's stored in seperate tables which I am looking to perform a weighted calculation on all three to produce a single Raster as an output (or a visualisation through OpenJump or Quantum).
The calculation I am attempting is basically: (raster1 * 0.2) + (raster2 * 0.5) + (raster3 * 0.3) I know MapAlgebra has a two Raster version, but is it possible to do this with three rasters? All three rasters are single band. An alternative I've considered is to perform the calculation on the first two rasters and then a second on the new and the third raster but to be able to do it one query would be ideal. Kind Regards, James ----- GIS Undergraduate -- View this message in context: http://postgis.17.n6.nabble.com/MapAlgebra-on-three-Rasters-tp4917643p4917643.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