Hi Folks -
My installation of Arc GIS 9.2 is acting bizarre. I am trying to do a bunch of raster calculations, ie, adding, multiplying, scaling, etc. using the raster calculator. I am obtaining nonsense results; for instance, adding a small float value to a raster, and getting huge numbers back that I know are wrong. I've never had this problem before! I have tried the toolbox and the SA calculator; same results. Tried my original *.img file then converted it to an ESRI grid, same results. I am at a loss to understand why Arc suddenly up and forgot how to do simple math! Any advice for me? thanks.