Problem
nccopy from netcdf version 4.6.3 becomes very slow when transforming a classical netcdf formatted file into a file with internal compression. The reason is that the information on the default chunk size is lost.
Solution
Either:
- use netcdf 4.4.1.1 or netcdf 4.6.0.
- deliver the chunk size explicitly. For details and an example, see the discussion on github
!
Related articles