I have two rasters and I want to subtract the values from one of the layers.
The first raster is a altitude raster and the second raster is depth values for a lake. I would like to subtract the depth values to get the altitude of the bedrock under the lake. When I do this in the raster calculator (raster 1 - raster 2) the resulting raster is all wrong and have extreme negative values (-1,7 x10^35). It has been pointed out to me that the "no data" values for one of the rasters are within the size of my negative output.
How do I change the "no data" values to get the result I'm after?