Some searching turned up this website for CDF5:
http://cucis.ece.northwestern.edu/projects/PnetCDF/CDF-5.html
I'm guessing this is more or less the official specification? If so, it
would be nice to update the official netCDF docs with it, too.
Best,
Stephan
On Mon, Jul 30, 2018 at 4:13 PM Wei-keng Liao <wkliao@xxxxxxxxxxxxxxxxxxxxx>
wrote:
> CDF5 file format specification and additional information
> can be found from the PnetCDF web site at
> https://parallel-netcdf.github.io
>
> Wei-keng
>
> > On Jul 30, 2018, at 4:49 PM, Stephan Hoyer <shoyer@xxxxxxxxx> wrote:
> >
> > The documentation for netCDF4-Python writes:
> > 'NETCDF3_64BIT_DATA' is the 64-bit data version of the netCDF 3 file
> format, which supports 64-bit dimension sizes plus unsigned and 64 bit
> integer data types, but is only compatible with clients linked against
> netCDF version 4.4.0 or later.
> >
> > This seems generally useful, so I'm interested in implementing support
> for this format in the netCDF3 module included in SciPy:
> > http://scipy.github.io/devdocs/generated/scipy.io.netcdf_file.html
> >
> > However, I can't seem to find a description of this format in the netCDF
> file format specification:
> >
> https://www.unidata.ucar.edu/software/netcdf/docs/file_format_specifications.html
> >
> > Is a full specification for this variation available somewhere? If not,
> I would encourage updating the specifications doc. One of the strengths of
> netCDF (especially netCDF3) is that it is clearly specified and has
> multiple independent implementations :).
> >
> > Cheers,
> > Stephan
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