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pythonnumpyscipypython-xarray
user308827
user308827

Reputation: 21961

“ValueError: chunksize cannot exceed dimension size” when trying to write xarray to netcdf

As per "ValueError: chunksize cannot exceed dimension size" when trying to write xarray to netcdf, setting engine to scipy should fix this error. However, this does not play with zlib=True in the encodings. How do I still zip the netCDF, currently I get this error with scipy engine:

*** ValueError: unexpected encoding for scipy backend: ['zlib']

Upvotes: 0

Views: 244

Answers (1)

shoyer
shoyer

Reputation: 9593

SciPy's netCDF reader/writer only supports the netCDF3 format, which does not support in-file compression (a netCDF4 feature). To use zlib=True you'll need to write netCDF files using either engine='netcdf4' or engine='h5netcdf'.

Upvotes: 1

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