Neil,

There's no support for SRS handling (both in reading or writing) in the GDAL GS7BG driver: https://github.com/OSGeo/gdal/blob/master/frmts/gsg/gs7bgdataset.cpp

Missing feature likely. Nobody has significantly touched this driver in the last 17 years since it was initially contributed. We were even considering removing the write side as there was no evidence it was used at all.

Can you share sample datasets of grids created by Surfer with a CRS assigned to them?

Even

Le 26/01/2025 à 19:00, Neil Watson via QGIS-User a écrit :
Hi,

I have been trying to save a CRS to Surfer 7 grid files for distribution to other users.  If I assign the CRS (EPSG 26912) to the grid in Surfer, it is recognized by Surfer.  If I assign it within a QGIS (3.34) project everything works well. But if I try to assign the CRS within QGIS either through Assign Projection or Exporting the file, the CRS isn't recognized by ARC GIS or QGIS.

Am I missing a step or is there a bug or something?



Sincerely,



Neil Watson, P. Geol.
Director, Geology



(m) 403-669-4457

http://www.enlightengeoscience.com/

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