Global Mapper Pro

DEM joints visable

Noklu Global Mapper UserTrusted User
After upgrading to V20 I noticed that the edges between two DEMs are now visible, If I open the same file in V17 and V18 they are not visible. Just curious if anyone else has had this experience.



  • Yes, we experienced this too. It actually happens also in the latest versions of V19.
    It also happens when flattening a part of a DEM and while using slope shader , so it becomes hard to see if the borders are actually steep slopes or it is just an effect of this.
  • Noklu
    Noklu Global Mapper User Trusted User
     I guess I would view this as a bug.
  • bmg_bob
    bmg_bob Global Mapper Programmer

    @Noklu and @Michele, I suggest that you contact Blue Marble Support directly via email ( about this issue. Please provide a detailed description of your work flow and results, along with some data that can reproduce the problem. Thanks.

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