Mike..
Thanks for opening this discussion. To make this namespace official
it should be register in IANA:
http://www.iana.org/.
Also, it's OK to use ".". It will be a compliant URI.
Once we settle, I will make changes to the ontology that MMI is
making available via SEMOR (
http://marinemetadata.org:9600/semor/.)
However, there is a current discussion about using URLs vs. URNs. I
think at MMI we are moving towards using as much as possible URLs,
even if having service like the previous mentioned.
So maybe this is better:
http://www.cfconventions.org/standard_name#air_density
http://www.cfconventions.org/canonical_units#kg.m-3
And, it can resolve nicely in any web browser -:)
-Luis
___________________
Luis Bermudez Ph.D.
MMI Technical Lead -
http://marinemetadata.org
bermudez at mbari.org Tel: (831) 775-1929
MBARI 7700 Sandholdt Road, Moss Landing CA 95039-9644, USA
On Mar 21, 2007, at 3:07 PM, Godin, Michael wrote:
> Luis, Bryan, et al.,
>
> This discussion was tabled last year pending at arrival of a cf
> domain name. Now that the domain cfconventions.org exists, perhaps
> can we revisit defining namespaces for cf, such as:
>
> urn:org:cfconventions:standard_name:entry
> urn:org:cfconventions:standard_name:canonical_units
>
> and then for a particular entry we can uniquely identify it by saying:
>
> urn:org:cfconventions:standard_name:entry#air_density
> urn:org:cfconventions:standard_name:canonical_units#kg.m-3
>
> where the canonical units simply have "." substituted for " " (as
> implemented in the output of ucar.units.Unit.getDerivedUnit();
>
> What would it take to make such a set of namespaces official?
>
> Thanks, Mike
>
> _____________________________________________
> Michael A. Godin
> Software Engineer
> Monterey Bay Aquarium Research Institute
> http://www.mbari.org
>
> -----Original Message-----
> From: cf-metadata-bounces at cgd.ucar.edu [mailto:cf-metadata-
> bounces at cgd.ucar.edu] On Behalf Of Bryan Lawrence
> Sent: Monday, April 03, 2006 7:17 AM
> To: cf-metadata at cgd.ucar.edu
> Subject: Re: [CF-metadata] unique identifiers
>
>
> Hi Luis
>
> Funny you should suggest this .. .we're on the same path too.
>
> Suffice to say, if you can live with your temporary name space,
> we'll be able to propose something later this year ... (with a cf
> domain rather than ncar).
>
> Cheers
> Bryan
>
> On Thursday 30 March 2006 19:00, Luis Bermudez wrote:
>> Dear All,
>>
>> We need unique identifiers so we can better describe the information
>> we are sending in XML files. This is to support Feature catalogues,
>> ISO -19115, SensorML etc.
>>
>> Is there an official namespace for CF standard names ?
>>
>> If not then we could we create a namespace like the following:
>>
>> urn:edu:ucar:cf:standard_name:entry
>> urn:edu:ucar:cf:standard_name:canonical_units
>>
>> and then for a particular entry we can uniquely identify it by
>> saying:
>>
>> - urn:edu:ucar:cf:standard_name:entry#air_density
>> - urn:edu:ucar:cf:standard_name:entry#kg_m-3 (needs a little bit of
>> massage)
>>
>> At MMI we are using a temporal namespace (http://marinemetadata.org/
>> 2005/02/cf), but we are looking forward to have a synchronize
>> ontology
>> with your publish XML file, so we can have real time mappings with
>> other standard dictionaries.
>>
>>
>> Cheers,
>>
>> Luis
>>
>>
>> ---------------------------------------
>> Luis Bermudez Ph.D.
>> Software Engineer
>> MMI Liaison - http://marinemetadata.org bermudez at mbari.org
>> Tel: (831) 775-1929
>> Monterey Bay Aquarium Research Institute
>
> --
> Bryan Lawrence
> Director of Environmental Archival and Associated Research Head of
> the NCAS/British Atmospheric Data Centre CCLRC, Rutherford Appleton
> Laboratory Phone +44 1235 445012; Fax ... 5848; Web:
> home.badc.rl.ac.uk/lawrence
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Received on Wed Mar 21 2007 - 17:09:29 GMT
