John,
If I can get my management to allow me time for that, I'd love to be
involved.
Jim
On 9/10/14, 2:34 PM, John Caron wrote:
Hi Karl and all:
NetCDF-4 compression and chunking are transparent to the user, and are
compatible with the "classic data model".
I think we should be gathering experiences with the enhanced data
model, and start a CF-2.X convention draft document that uses the
enhanced model. It would also be a good time to remove deprecated
features and in general not require backwards compatibility. Perhaps
if there are 5-6 people we could start a working group to discuss.
John
On Wed, Sep 10, 2014 at 10:35 AM, Corey Bettenhausen
<[email protected] <mailto:[email protected]>>
wrote:
Tim,
There was a discussion of this last year. See the archives:
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2013/author.html
Particularly, the thread "Towards recognizing and exploiting
hierarchical groups":
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2013/056827.html
Cheers,
-Corey
On Sep 10, 2014, at 9:53 AM, Timothy Patterson wrote:
> Is it correct to say that, although they don't explicitly state
it, the CF conventions (1.6 and the draft 1.7) restrict compliant
netCDF products to be either netCDF-3 or netCDF-4 in classic
format? There are no conventions for the enhanced features such as
groups and user-defined types like enumerated variables, and
Section 2.2, as an example, bars the use of unsigned integer
variables or string variables (which are even stated not to exist,
again implying classic-model only).
>
> There are some features of the enhanced model we want to use for
our future datasets (such as groups) and some features which would
make life easier but could be worked around if it led to CF
compliance (enumerated types, unsigned integers, string types,
etc.). Are there any plans to introduce conventions for the use of
these enhanced features at some point in the future or would
non-classic model datasets always be seen as non-compliant?
>
> Thanks for your insights on this issue!
>
> Regards,
>
> Tim Patterson
>
>
>
> ---------------------
>
> Dr. Timothy Patterson
> Instrument Data Simulation
> Product Format Specification
>
> EUMETSAT, Eumetsatallee 1, D-64295 Darmstadt, Germany
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--
Corey Bettenhausen
Science Systems and Applications, Inc
NASA Goddard Space Flight Center
301 614 5383 <tel:301%20614%205383>
[email protected] <mailto:[email protected]>
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