GeoSoft GRID Export File Size

joebocopjoebocop Global Mapper UserPosts: 34Trusted User
edited June 2015 in Technical Support
I am loading a mosaic of 3 GeoTIFF DSMs into GlobalMapper 16.2, each a 32-bit float cell type, totalling about 4gb in size (1.3gb per GeoTiff).

When I export to GeoSoft GRID format, using the bounds of the data themselves (as specified by an area feature I manually digitize), the output file is around 30gb in size.

Is this expected? I had understood the GeoSoft GRID format to be quite efficient.

Any expertise on the topic is very much appreciated.

Thank you.
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