We are doing a ton of precip raster analysis and rectification, and we are struggling to find details on the algebraic expressions that we can use, ie, "[rast1] + [rast2]" is great if we are adding, but we are also interested in boolean calculations etc.
The basic postgis reference page is great for understanding syntax but I am looking for recipes or a large raster calculator reference. Thanks on advance, Robert -- Robert W. Burgholzer 'Making the simple complicated is commonplace; making the complicated simple, awesomely simple, that's creativity.' - Charles Mingus
