DEM negative

BlazBlaz Global Mapper UserPosts: 4
edited March 2015 in Elevation Data
Hi all!

I don't have much experience regarding GIS software, so I hope you will be able to answer my question.
I have DEM in .xyz format. Now, that I opened it, I would like to create negative of the surface.
Is that possible? If it is, how?

Thank you very much,


  • Ice Age MarkIce Age Mark Global Mapper User Posts: 294Trusted User
    edited March 2015
    Go to the "alter elevation values" for the DEM layer and put -1 instead of 1 for the "scale factor.

    You can invert the vector elevation area's created by the contour generation feature this way too.


  • BlazBlaz Global Mapper User Posts: 4
    edited March 2015
    Thank you very much, it works great!
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