I have some rasters representing geologic surfaces that I had clipped away where the geology was not present. I now realize that this was a really dumb idea... How can I fill these large areas with a -99999?
What I've tried to do so far is create a constant raster (snapped to the geologic raster with same cell size) and then mosaic the geologic surface raster with the constant raster keeping the "maximun" value... It's not working like I'd hoped- I still end up with holes in the resulting raster.
