Global Mapper v24.1

Elevation geotiff not holding resolution on export

Kbates
Kbates
in Elevation Data
I have around 30 lines that i'm trying to combine into an elevation Geotiff or any other format to bring into GIS.  I'm exporting with the same spacing that I'm importing the individual lines, however, when I bring the combined lines Geotiff that I exported back into GM, it's losing it's resolution and looks much different than the original surface viewed in GM.

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  • bmg_bob
    bmg_bob Global Mapper Programmer
    Hello,

    It looks like you might be exporting a file with 16-bit or 32-bit integer samples -- that often results in a tiered surface that looks like your image, especially if your elevation units are meters or feet. If that is the case, I suggest that you export using 32-bit floating point samples.

    Cheers,
    Bob
  • Kbates
    Kbates
    Hey bob,

    Unfortunately, this didn't help.


  • bmg_bob
    bmg_bob Global Mapper Programmer
    Hello,

    I suggest that you contact Blue Marble Support directly via email (geohelp@bluemarblegeo.com) to see if they have any other ideas. Please provide a detailed description of your work flow, including screen captures of an options screens that are involved, along with some data that they can use to reproduce the problem. 

    Cheers,
    Bob

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