Hi!
I'm trying to find a specific function in ArcMap 9.3 that is available in Global Mapper for example.
I'm loading two DEM files that have the same extends but different resolutions. The higher resolution DEM is on top.
Because the high resolution DEM is full of artifacts I want to select the mountainous areas only by covering those with polygons for example. The next step would be to make the areas outside the polygons invisible in the highres DEM so that the lower resolution DEM becomes visible outside the mountainous areas.
The highres DEM needs to merge seamlessly with the lowres DEM with smoothed/blended/feathered borders (whatever you like to call it).
GlobalMapper can do this by default and easily but takes ages to calculate the result. Therefore I'm trying to find a way to do the same in ArcMap, which is usually much faster in processing.
Thanks!