Hello,
I think spaces or commas are ok, according to ticket #76 (accepted):
It is possible for a netCDF file to adhere to more than one set of
conventions, even when there is no inheritance relationship among
the conventions. In this case, the value of the Conventions
attribute may be a single text string containing a list of the
convention names separated by blank space (recommended) or commas
(if a convention name contains blanks). This is the Unidata
recommended syntax from NetCDF Users Guide, Appendix B. If the
string contains any commas, it is assumed to be a comma-separated
list.
All the best,
David
---- Original message from Chris Barker (12PM 29 Jul 15)
> Date: Wed, 29 Jul 2015 12:58:43 -0700
> From: Chris Barker <chris.barker at noaa.gov>
> To: Nan Galbraith <ngalbraith at whoi.edu>
> CC: "cf-metadata at cgd.ucar.edu" <cf-metadata at cgd.ucar.edu>
> Subject: Re: [CF-metadata] Applying multiple conventions
>
> On Wed, Jul 29, 2015 at 11:47 AM, Nan Galbraith <ngalbraith at whoi.edu> wrote:
>
> > Unless UGRID and CMIP6 are 'additional conventions for a specific subset
> > of [CF} data' I think these terms should be separated by spaces, not
> > slashes.
> >
>
> or commas? aren't commas better?
>
> But anyway, we had this discussion in the UGRID group -- and I *think* we
> decided that while UGRID is designed to be used in conjunction with CF, and
> therefore 'additional conventions for a specific subset of [CF} data', it
> could, in fact be useful outsid eof CF -- so it really makes more sense to
> think of it as an additional convention -- and I can't see what lose by
> specifying it this way -- in both cases, you mean:
>
> This file conforms both to CF and UGRID.
>
> -CHB
>
>
>
>
>
> > We took that approach in OceanSITES and in ACDD; although these other
> > conventions use CF, they're 'stand-alone' in some ways.
> >
> > I'm glad you mentioned this page, I'll see if I can add OceanSITES there
> > too.
> >
> > Cheers - Nan
> >
> >
> > On 7/29/15 5:04 AM, martin.juckes at stfc.ac.uk wrote:
> >
> >> Continuing thread:
> >> http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2015/058036.html
> >>
> >> Hello All,
> >>
> >> I'd like to pick up this thread again. The min motivation of raising it
> >> was to get a change to the following line in the draft 1.7 conformance
> >> document (in section 2.6.1) 'Files that conform to the CF version 1.5
> >> conventions must indicate this by setting the global Conventions attribute
> >> to the string value "CF-1.5"'.
> >>
> >> As Nan has pointed out, the UNIDATA FTP page (
> >> ftp://ftp.unidata.ucar.edu/pub/netcdf/Conventions/) is no longer the
> >> authoritative location for NetCDF conventions, having been superseded by
> >> http://www.unidata.ucar.edu/software/netcdf/conventions.html : so it
> >> would make sense to update the reference to the FTP page in the CF
> >> Conventions document.
> >>
> >> It looks to me as though that page has a clear and well thought out
> >> definition of the use of the Conventions attribute, and it would make sense
> >> to adopt it. For the specific cases of UGRID and CMIP it looks as though
> >> "CF-1.7/CMIP6" or "CF-1.7/UGRID/CMIP6" would be appropriate.
> >>
> >> For UGRID, this approach would be cleaner if the UGRID convention was
> >> actually registered and referenced on
> >> http://www.unidata.ucar.edu/software/netcdf/conventions.html -- I'll
> >> look into that, and the same applies to CMIP conventions.
> >>
> >> regards,
> >> Martin
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> CF-metadata mailing list
> >> CF-metadata at cgd.ucar.edu
> >> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
> >>
> >>
> >
> > --
> > *******************************************************
> > * Nan Galbraith (508) 289-2444 *
> > * Upper Ocean Processes Group Mail Stop 29 *
> > * Woods Hole Oceanographic Institution *
> > * Woods Hole, MA 02543 *
> > *******************************************************
> >
> >
> >
> > _______________________________________________
> > CF-metadata mailing list
> > CF-metadata at cgd.ucar.edu
> > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
> >
>
>
>
> --
>
> Christopher Barker, Ph.D.
> Oceanographer
>
> Emergency Response Division
> NOAA/NOS/OR&R (206) 526-6959 voice
> 7600 Sand Point Way NE (206) 526-6329 fax
> Seattle, WA 98115 (206) 526-6317 main reception
>
> Chris.Barker at noaa.gov
> _______________________________________________
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> CF-metadata at cgd.ucar.edu
> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
--
David Hassell
National Centre for Atmospheric Science (NCAS)
Department of Meteorology, University of Reading,
Earley Gate, PO Box 243,
Reading RG6 6BB, U.K.
Tel : +44 118 3785613
E-mail: d.c.hassell at reading.ac.uk
Received on Thu Jul 30 2015 - 04:26:12 BST
