FEATURE REQUEST: make kerchunk work for everything that can be opened by xr.open_dataset

[aaronspring]

I really like kerchunk. I started #123 because I wanted to use kerchunk on MPIESM climate model output, which turns out is Netcdf2. kerchunk is built on h5py which I think requires Netcdf4. Are there current efforts to widen the range of input types for kerchunk, i.e. allowing more file types, maybe even these that can be opened by xarray.open_dataset?

Or would this essential mean replicating much of the xarray io again in kerchunk?

[martindurant]

netCDF4/HDF5 was indeed the first format we have developed (largely thanks fo @ajelenak 's deep knowledge of h5py) and certainly the most fruitful. We fully intend to support more formats, and netCDF-classic (i.e., versions 1-3) is definitely on that list.

( @rsignell-usgs , I don't remember which of your suggested datasets included both netCDF4 and netCDF-classic, please link here)

[martindurant]

@aaronspring , can you point me to one of these files? Which xarray engine do you normally use to read it, and does it matter?

[aaronspring]

does it matter?

no. I don't specify engine.

Tiny cdf2 File: https://owncloud.gwdg.de/index.php/s/UQpymejGK2Uo15g Or do you need a realistic size file?

That files doesnt work with h5py. But it works after convert to nc4: cdo -f nc4 -copy ifile.nc ifile.nc

[martindurant]

the netCDF3 module seems to handle the netCDF2 case also. Closing this.