How to compare two DEMs to see vertical differences

Can someone help me figure out how to compare two dems to see where vertical changes have happened? I know there is a really simple way to do this, but I cant seem to get it to work.

Comments

  • bmg_mike
    bmg_mike Global Mapper Guru Moderator, Trusted User

    Hello,

    Just use the Terrain Analysis -> Combine/Compare Terrain menu command to subtract one loaded DEM from another to get a difference surface.

    Thanks,

    Mike

    Global Mapper Guru