preserving original raster values when combining

Discussion created by cabrittain on Jul 21, 2011
Latest reply on Jul 22, 2011 by cabrittain
Hi, I see that when combining raster layers the output layer produces new values for the cells but is there any way of 'carrying over' the values from the original layers?
I have two raster layers that I would like to combine and be able to see the original values of both. Basically I would like an equivalent of the 'union' tool for rasters - does this exist?