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Global Mapper Pro

Export Geotiff to other programs

mashmash Global Mapper UserPosts: 6
in Elevation Data
Hi, Source data is USGS 3DEP. I'm trying to export a Geotiff image to use as a Height map in World creator 2 or Gaea. In both programs when I import the file as a Heightmap I get a stair stepping effect. Like the file has gone from 32 bit to 16 bit. I'm trying to figure out of the issue is with Global mapper export or if it's a problem with the import in WC2 or Gaea. If anyone has any ideas I would appreciate it. Thank you 
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Answers

  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,329
    Hello,

    When you export the elevation grid as GeoTIFF, be sure to select the "Elevation (32 bit floating point samples" option. If you prefer an integer format, change the Vertical Units to centimeters or millimeters or inches.

    Cheers,
    Bob
  • mashmash Global Mapper User Posts: 6
    Thanks for the answer, For some reason that option is greyed out for me. 
  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,329
    Hello,

    It appears that you are exporting your data as a raster image instead of an elevation grid. Use File | Export | Export Elevation Grid Format, then select GeoTIFF from the list. You should get options that have the Elevation file types enabled.

    Cheers,
    Bob
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