Export Geotiff to other programs
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.
Thanks for the answer, For some reason that option is greyed out for me.
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.
Hello. I'm new here, and having the same problem. Now exporting as Elevation Grid Format (thank you Bob), but it is showing up terraced. The original file is nice and smooth, but enormous, so all I am doing is exporting a smaller section.
I'm importing it into Unreal using Terrain Magic.
What is likely happening is that your elevation values are snapping to the nearest whole number value in the selected units. If you choose the 32-bit floating point samples option on the GeoTIFF export dialog, then you should get the full resolution, although the file will be much larger than the 16-bit elevation sample option.
If you must use the 16-bit option, choose a more precise elevation unit, like centimeters, to eliminate the stairstep (or at least make the steps one centimeter in size, which is likely more precise than your actual data).
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