Unknown coordinates in converted VDF from NETCDF

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seyed.omid.naba...
Unknown coordinates in converted VDF from NETCDF

Dear Sir/Madam,

I am trying to georefrence VDF extracted from a netcdf file file. I used vdfedit tool but I do not know exactly how to perform this command .
vdfedit -mapprojection "+proj=latlon +datum=WGS84 +to +proj=latlon +datum=WGS84" data.vdf
Can you please correct above command.
BTW, the region is between 20N to 40N and 35E to 65E. Z, if needed, is in 290 levels (-.5km to 8.17km).
Best regards,
Omid.