.HEL_ADV file for datum conversion

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Sooraj Sekhar

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Jun 1, 2026, 10:28:15 PM (2 days ago) Jun 1
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Hello All. 

I got a .HEL_ADV file for datum conversion to a local grid. Is there any way I can add that in QGIS as a projection? 

Any help is appreciated.

Thanks

Emma Hain

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Jun 1, 2026, 11:36:57 PM (2 days ago) Jun 1
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Hi Sekhar
You cannot use it directly but you can extract out the parameters and create your own see the QGIS documentation on custom CRS

Kind regards
Em


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