Thank you for the reminder Roy, I should have posted this a while back
I have written a paper on publishing standard names which I think might provide some of the required functionality for the community.
It would be very useful for me and work I am involved in.
The paper is attached. I invite feedback on this proposal
many thanks
mark
________________________________
From: CF-metadata [cf-metadata-bounces at cgd.ucar.edu] on behalf of Lowry, Roy K. [rkl at bodc.ac.uk]
Sent: 13 June 2013 14:50
To: Ajay Krishnan - NOAA Affiliate; cf-metadata at cgd.ucar.edu
Subject: Re: [CF-metadata] standard_name_vocabulary attribute
Hello Ajay,
If I've got it right, your example is a URL for a single standard name. The version numbers refer to versions of the whole list and so including the version number in a reference to a single standard name causes the standard name to inherit the version number of the list of which it is a member. Trouble is that most standard names are members of more than one list version but the standard name is exactly the same in each of these versions. Consequently, a given standard name ends up with multiple URIs. In version 1 of the vocabulary server we run (NERC Vocabulary Server or NVS) we made the mistake of list members inheriting the version numbers of their parent lists and learned the hard way the problems it causes for operational systems. Versioning in the current version of NVS (V2)has been done differently with list member and list versioning totally decoupled and the versioning information explicitly excluded from list member URIs.
I am aware of work underway by Mark Hedley at the UK Met Office to provide URLs for Standard Names in a CF namespace that follow linked data principles by resolving into usable XML (SKOS RDF) documents. I'm not sure how far this work has progressed, so I'll leave it Mark to say more on the list if he feels he's ready.
Cheers, Roy.
________________________________
From: CF-metadata [cf-metadata-bounces at cgd.ucar.edu] on behalf of Ajay Krishnan - NOAA Affiliate [ajay.krishnan at noaa.gov]
Sent: 13 June 2013 13:44
To: cf-metadata at cgd.ucar.edu
Subject: [CF-metadata] standard_name_vocabulary attribute
Hi,
There seems to be some ambiguity about the usage of the standard_name_vocabulary attribute. Based on the link below, the right value would be to use something like CF 1.6
http://www.unidata.ucar.edu/software/netcdf-java/formats/DataDiscoveryAttConvention.html#standard_name_vocabulary_Attribute
Is that the right usage or should we reference the version of the cf-standard-name-table like v1..v23 etc.?
Any info on this would be much appreciated.
Thanks,
Ajay
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Received on Thu Jun 13 2013 - 10:14:53 BST
