Global Mapper Pro Coming Soon


I've been using my own maps produced with a UAS.  Until just today, the elevations were correct and fairly precise.  But, today I used the same data (geotiff and geotiff-dem layered), and the elevations were off by ~2,600.'  I'm trying to figure out if I changed a setting or if anyone else has encountered a similar issue.  Any help will be appreciated!

Also, I am novice with GM and raster/vector data, having only completed the GM self training.


  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,296

    What version of Global Mapper are you using?

    Can you provide more details about your workflow?  If you load the same data, you will get the same elevations.  It sounds like you may have made changes in the Control Center's Vertical Options for the layer (accessed via the Options... button.)  


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