How to delete a group variable while keeping the group structure of a netcdf in python or bash?

Question

I have a .nc file with a group structure, one of the groups containing a variable I need to delete.

Using xarray, if I want to delete the variable I can only extract its group as a new .nc file.

ds = xr.load_dataset(path_test,group='/data_01/ku')
ds = ds.drop_vars(["ssh"])
ds.to_netcdf(path_test, mode="a", group='/data_01/ku')

Using bash command ncks (from nco) doing this : ncks -x -g data_01/ku -v ssh in.nc out.nc I get a memory error.

Does anyone know how to delete one specific variable while keeping the complete group structure of the file ?

Thanks guys

Could you provide the sample netCDF you are using? – clausmichele Feb 07 '22 at 10:33 — clausmichele, Feb 07 '22 at 10:33

score 0 · Answer 1 · answered Feb 26 '22 at 15:32

0

The ncks command you tried looks correct, and such commands work for me. Try adding the -C switch just in case:

ncks -O -x -C -g g1/g1g1 -v ppc_dbl ~/nco/data/in_grp.nc ~/foo.nc

Seems like you got unlucky, or possibly are employing an old NCO version?

answered Feb 26 '22 at 15:32

Charlie Zender

1 Answers1