Mike, Cauquil, list,
I'm interested in this topic of file formats and CF compliance. I've only used the most basic CF features (CF-required global attributes and variable attributes). To me none of these seem to depend on whether the file is netCDF3/4 or HDF5. Are there more advanced features of CF that require the netCDF "Classic" model? Can we expand to at least netCDF4 with data only in the root group?
I brought this up late last year, but didn't get any bites:
http://www.mail-archive.com/cf-metadata at cgd.ucar.edu/msg02487.html
As far as a proof of concept, I do have HDF5 files that will pass a CF-checker, however only data sets in the root group are checked as the CF-checker doesn't descend into sub-groups. So I know that that it's possible to a degree, but the question is whether or not this is "blessed" by the actual conventions.
Regards,
-Corey
On Tue, 13 Mar 2012 09:31:46 +0000
Mike Grant <mggr at pml.ac.uk> wrote:
>Hi Cauquil,
>
>On 12/03/12 15:29, Cauquil Pascal (Capgemini) wrote:
>> We intend to use netcdf4 for this new program to use compression and
>> group possibilities but, we want also to be compliant with CF-1.6
>> convention.
>>
>> Do you think it is a possible to display "CF-1.6 compliant" using
>> these 2 netCDF4 features too? Is netCDF4 an axis of discussion for
>> the CF group?
>
>We use netcdf4 with internal compression and are 1.6 compliant (in as
>much as we can say that without having a compliance checker to ensure
>that). There's no conflict between CF and the compression feature.
>
>I'm not so sure about internal groupings (like HDF5?). I don't see any
>reason why it shouldn't be compatible, but I don't think anyone has put
>effort into defining exactly the expectations for the "non-classic"
>model. CF may currently be somewhat tied to the netcdf "classic" model,
>but perhaps someone wiser can correct me.
>
>Cheers,
>
>Mike.
>
><br />
><hr />
><p><font face="Arial" size="1">
>Plymouth Marine Laboratory<br />
>Registered Office: <br />
>Prospect Place<br />
>The Hoe<br />
>Plymouth PL1 3DH
></font></p>
>
><p><font face="Arial" size="1">Website: <a href="http://www.pml.ac.uk">www.pml.ac.uk</a>
><br />
><a href="http://www.pml.ac.uk/pdf/PML%20Annual%20Review%202011_2.pdf">Click here for the latest PML Annual Review</a>
><br />
>Registered Charity No. 1091222<br />
>PML is a company limited by guarantee<br />
>registered in England & Wales<br />
>company number 4178503</font></p>
>
><p><font face="Arial" size="1" color="green">Please think before you print.</font></p>
>
><hr />
>
><p><font face="Arial" size="1">This e-mail, its content and any file attachments are confidential.</font></p>
>
><p><font face="Arial" size="1">If you have received this e-mail in error please do not copy, disclose it to any third party or use the contents or attachments in any way. Please notify the sender by replying to this e-mail or e-mail forinfo at pml.ac.uk and then delete the email without making any copies or using it in any other way.</font></p>
>
><p><font face="Arial" size="1">The content of this message may contain personal views which are not the views of Plymouth Marine Laboratory unless specifically stated.</font></p>
>
><p><font face="Arial" size="1">You are reminded that e-mail communications are not secure and may contain viruses. Plymouth Marine Laboratory accepts no liability for any loss or damage which may be caused by viruses.</font></p>
>
><hr />
><br />
><br />
>
>_______________________________________________
>CF-metadata mailing list
>CF-metadata at cgd.ucar.edu
>http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
*************************************
Corey Bettenhausen
Science System and Applications, Inc
Goddard Space Flight Center
301 614 5383
corey_bettenhausen at ssaihq.com
*************************************
Received on Tue Mar 13 2012 - 07:02:22 GMT
