how can i create height error map (HEM) ?
I am now working with the data SRTM, TerraSAR, IFSAR, and aster GDEM. how to make HEM (Height Error Map) of each of these data using Global Mapper v16 ?
Global Mapper Programmer
I don't know what a Height Error Map is, but you can compare two elevation layers to produce a third elevation layer that represents the differences between them. Is that what you need to do? If so, on the main menu, use the Analysis | Combine/Compare Terrain Layers... function. If not, please post a more detailed description of a Height Error Map so we can determine whether or not there is existing functionality that will do what you need.