Hi, 

Although the .grd format used by Geosoft nowadays is proprietary, you
can use the free viewer, as said below, to export the file into .gxf
(the Geosoft grid exchange format) and open it in many, many
applications, including QGIS. 

A word of caution: you must be sure that the orientation of the Geosoft
grid is set to 1, otherwise the GDAL GXF importer will not work
correctly (at least, as at the last time I've used it, long time ago!). 

cheers,
Benoit 

On 28/07/2016 04:44, Szilard Albert wrote:

> Hi, indeed, Oasis Montaj free viewer is able to convert .grd to .ers, from 
> under Grids menu. I successfully exported a .grd file as .ers, and while my 
> Qgis is busy processing, I was able to open the exported .ers in Global 
> Mapper.
> Tried to attach a screenshot of the output format choices, but it gets 
> blocked due to message size. regards, Szilard 
> 
> On 28 July 2016 at 11:45, Nicolas Cadieux <nicolas.cadi...@archeotec.ca> 
> wrote:
> 
> Hi,
> According to this the geosoft free viewer has some export capabilities. 
> 
> https://pubs.usgs.gov/of/2004/1258/Data/grid_facts.txt 
> 
> Good luck
> Nicolas
> 
> On Jul 27, 2016 21:24, "Grant Boxer [via OSGeo.org]" <[hidden email] [1]> 
> wrote:
> 
> QGIS does not seem to be able to read the Geosoft grid format (*.grd) grids. 
> 
> Can anyone suggest how I may be able to convert these files to a format (for 
> example to ERMapper (*.ers) files) suitable for QGIS? 
> 
> Grant Boxer 
> 
> Perth, Western Australia 
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