Best way to clean up a DEM?

Discussion created by dcomer on Jun 5, 2013
Latest reply on Jun 6, 2013 by dcomer
I am working with a LIDAR generated DEM for an island, and there is a lot of noise and artificial geometry in the raster. I can successfully clip the island with a vector mask, but that returns a very irregularly shaped raster and seems to be breaking all of my spatial analyst tools. Ideally, I would like to classify every value outside of the mask as 0 to maintain a workable raster, but I am unsure of how to do this. Every tool that I've used with the mask (extract, clip) just gives me the island-shaped raster. My question is two-fold - is there a better way to do this and are irregularly shaped rasters fundamentally unusable with surface modeling tools?