Re: [CF-metadata] Web reference to a standard name?
Thanks all, Interesting to see the new MMI ontology work. I take from this discussion then that there is not currently a CF 'blessed' method to reference a term? E.g. for air_temperature I can choose from any of these: http://mmisw.org/ont/cf/parameter/air_temperature http://vocab.ndg.nerc.ac.uk/term/P071/16/CFSN0023 http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.html#air_temperature plus: http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml Cheers, Dom On 14/12/10 08:18, Lowry, Roy K. wrote: Dear All, Working to find a way of harmonising the two sources of web-served Standard Names is on by ‘To-Do’ list for next year (part of an issue list fed into the NETMAR project by John G.) Cheers, Roy. *From:* cf-metadata-boun...@cgd.ucar.edu [mailto:cf-metadata-boun...@cgd.ucar.edu] *On Behalf Of *John Graybeal *Sent:* 13 December 2010 22:28 *To:* Benno Blumenthal *Cc:* cf-metadata@cgd.ucar.edu *Subject:* Re: [CF-metadata] Web reference to a standard name? A minor clarification as to how MMI is doing things: Benno, all, On Dec 13, 2010, at 07:25, Benno Blumenthal wrote: We have tried to get standard URIs for CF concepts, but the effort bogged down. As for standard names, MMI established a set of URIs at http://marinemetadata.org/cf but has not been keeping up to date. Thanks for the mention. This is our older URL, sorry; we are now maintaining CF standard names in our ontology repository, using resolvable URLs. [1] There was a period when MMI was not keeping up to date with CF changes, but in the recent past we have been continuously updating the SKOS ontology for the parameter names at the site Carlos mentioned [1] (We will forward the misleading /cf URL above, or fix it to make clear in some other way the current status; thanks for calling that out.) As with Roy's handling, we provide URLs both for the current version at the reference URL, and for individual releases of the vocabulary. John [1] http://mmisw.org/ont/cf/parameter I have written a XSL transform at http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl that can be applied to http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml to generate an up-to-date version, e.g. xsltproc http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml On the other hand, Roy has created opaque URIs for standard names at http://vocab.ndg.nerc.ac.uk/list/P07/9 contains all the Standard Names that have ever been published, including names that have been aliased http://vocab.ndg.nerc.ac.uk/list/P071/9 contains the Standard Names that are currently valid (i.e. those that have not been deprecated through aliasing) http://vocab.ndg.nerc.ac.uk/list/P072/9 contains the Standard Names that have been deprecated through aliasing The mapping between deprecates and their replacement aliases my be obtained through the following API call http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectList=http://vocab.ndg.nerc.ac.uk/list/P072/currentpredicate=255objectList=http://vocab.ndg.nerc.ac.uk/list/P071/currentinference=false http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectList=http://vocab.ndg.nerc.ac.uk/list/P072/currentpredicate=255objectList=http://vocab.ndg.nerc.ac.uk/list/P071/currentinference=false he changes them with each version, so it is both more definitive and harder to use. It is also pure SKOS, so one needs to add structure to actually connect it with a CF-described dataset. I plan to write out a map between the two, so that I can use his relationships between CF standard_names, but I do not have it yet. Additional information and ontologies describing the CF structure both as attributes and conceptually are available at http://iridl.ldeo.columbia.edu/ontologies/, including the connections between the standard_name ontologies and the CF structure. Benno On Mon, Dec 13, 2010 at 9:22 AM, Dominic Lowe dominic.l...@stfc.ac.uk mailto:dominic.l...@stfc.ac.uk wrote: Hello all, What's the current CF recommended scheme for referencing a standard name on the web? (either by URL or URN). I know about the vocab server and the xml/html online versions and could choose to use URLs to point to items in any of these but is there a definitive pattern that should be used? (or at least a best practice that should be encouraged?). Much appreciated, Dominic -- Scanned by iCritical. ___ CF-metadata mailing list CF-metadata@cgd.ucar.edu mailto:CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata -- Dr. M. Benno Blumenthal be...@iri.columbia.edu mailto:be...@iri.columbia.edu International Research Institute for climate and society The
[CF-metadata] CF 1.5 and discrete Sampling Geometries
Dear Upendra John Caron, Steve Hankin and I have been working on it as hard as time allows over the last several months and made a lot of progress. There will be a new draft made public soon I expect. Best wishes Jonathan On Mon, Dec 13, 2010 at 03:08:40PM -0500, Upendra Dadi wrote: Hi folks, Can someone please let me know when Discrete Sampling Geometries (https://cf-pcmdi.llnl.gov/trac/wiki/PointObservationConventions) be part of CF officially ? Is this chapter going to be added to CF eventually? Or is this page defunct? I don't see any mention of CF:featureType in the CF-1.5 documentation. Upendra ___ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
Re: [CF-metadata] Web reference to a standard name?
In theory, MMI can support that approach (redirecting cfconventions.org, ideally transparently). (That is, I worked it out in my head once. Haven't actually tried it in practice. I *think* it's just a simple matter of programming. ;-) I think that's the best combination to support both appropriate branding and the kind of support a full time dedicated repository can give. Roy's server perhaps the same. (But not both at once!) Just to be crystal clear, the places where you have '16' could also have 'current' (if I understand correctly what Roy was saying about their server), and the mmisw one could also be served with a particular version ID (analogous to the NERC example). If there is someone on the CF (or other) team that wants to play with us on the 'simple matter of programming' part, that would be a collaboration we'd be happy to encourage. John On Dec 14, 2010, at 08:16, Steve Hankin wrote: I second that thought. On 12/14/2010 3:12 AM, Bryan Lawrence wrote: Hi Dom Actually, I think we really want: http://cfconventions.org/something (We own cfconventions.org, so we can point it where we want!) And I would like in 2011 to have settled on a permanent answer to that question! Cheers Bryan Thanks all, Interesting to see the new MMI ontology work. I take from this discussion then that there is not currently a CF 'blessed' method to reference a term? E.g. for air_temperature I can choose from any of these: http://mmisw.org/ont/cf/parameter/air_temperature http://vocab.ndg.nerc.ac.uk/term/P071/16/CFSN0023 http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-ta ble/16/cf-standard-name-table.html#air_temperature plus: http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-ta ble/16/cf-standard-name-table.xml Cheers, Dom On 14/12/10 08:18, Lowry, Roy K. wrote: Dear All, Working to find a way of harmonising the two sources of web-served Standard Names is on by ‘To-Do’ list for next year (part of an issue list fed into the NETMAR project by John G.) Cheers, Roy. *From:* cf-metadata-boun...@cgd.ucar.edu [mailto:cf-metadata-boun...@cgd.ucar.edu] *On Behalf Of *John Graybeal *Sent:* 13 December 2010 22:28 *To:* Benno Blumenthal *Cc:* cf-metadata@cgd.ucar.edu *Subject:* Re: [CF-metadata] Web reference to a standard name? A minor clarification as to how MMI is doing things: Benno, all, On Dec 13, 2010, at 07:25, Benno Blumenthal wrote: We have tried to get standard URIs for CF concepts, but the effort bogged down. As for standard names, MMI established a set of URIs at http://marinemetadata.org/cf but has not been keeping up to date. Thanks for the mention. This is our older URL, sorry; we are now maintaining CF standard names in our ontology repository, using resolvable URLs. [1] There was a period when MMI was not keeping up to date with CF changes, but in the recent past we have been continuously updating the SKOS ontology for the parameter names at the site Carlos mentioned [1] (We will forward the misleading /cf URL above, or fix it to make clear in some other way the current status; thanks for calling that out.) As with Roy's handling, we provide URLs both for the current version at the reference URL, and for individual releases of the vocabulary. John [1] http://mmisw.org/ont/cf/parameter I have written a XSL transform at http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl that can be applied to http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name- table/16/cf-standard-name-table.xml to generate an up-to-date version, e.g. xsltproc http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name -table/16/cf-standard-name-table.xml On the other hand, Roy has created opaque URIs for standard names at http://vocab.ndg.nerc.ac.uk/list/P07/9 contains all the Standard Names that have ever been published, including names that have been aliased http://vocab.ndg.nerc.ac.uk/list/P071/9 contains the Standard Names that are currently valid (i.e. those that have not been deprecated through aliasing) http://vocab.ndg.nerc.ac.uk/list/P072/9 contains the Standard Names that have been deprecated through aliasing The mapping between deprecates and their replacement aliases my be obtained through the following API call http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectList =http://vocab.ndg.nerc.ac.uk/list/P072/currentpredicate=255object List=http://vocab.ndg.nerc.ac.uk/list/P071/currentinference=false http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectLi st=http://vocab.ndg.nerc.ac.uk/list/P072/currentpredicate=255obje ctList=http://vocab.ndg.nerc.ac.uk/list/P071/currentinference=fals e he changes them with each version, so it is both more definitive and harder to use. It is also pure SKOS,
Re: [CF-metadata] Web reference to a standard name?
Ditto! Implementing what is suggested would be around 20 lines of code. We've done the same for SeaDataNet to get their vocabs within their namespace such as http://www.seadatanet.org/urnurl/SDN:P021::TEMP Cheers, Roy. From: cf-metadata-boun...@cgd.ucar.edu [cf-metadata-boun...@cgd.ucar.edu] On Behalf Of John Graybeal [jbgrayb...@mindspring.com] Sent: 14 December 2010 17:56 To: Steve Hankin Cc: cf-metadata@cgd.ucar.edu Subject: Re: [CF-metadata] Web reference to a standard name? In theory, MMI can support that approach (redirecting cfconventions.org, ideally transparently). (That is, I worked it out in my head once. Haven't actually tried it in practice. I *think* it's just a simple matter of programming. ;-) I think that's the best combination to support both appropriate branding and the kind of support a full time dedicated repository can give. Roy's server perhaps the same. (But not both at once!) Just to be crystal clear, the places where you have '16' could also have 'current' (if I understand correctly what Roy was saying about their server), and the mmisw one could also be served with a particular version ID (analogous to the NERC example). If there is someone on the CF (or other) team that wants to play with us on the 'simple matter of programming' part, that would be a collaboration we'd be happy to encourage. John On Dec 14, 2010, at 08:16, Steve Hankin wrote: I second that thought. On 12/14/2010 3:12 AM, Bryan Lawrence wrote: Hi Dom Actually, I think we really want: http://cfconventions.org/something (We own cfconventions.org, so we can point it where we want!) And I would like in 2011 to have settled on a permanent answer to that question! Cheers Bryan Thanks all, Interesting to see the new MMI ontology work. I take from this discussion then that there is not currently a CF 'blessed' method to reference a term? E.g. for air_temperature I can choose from any of these: http://mmisw.org/ont/cf/parameter/air_temperature http://vocab.ndg.nerc.ac.uk/term/P071/16/CFSN0023 http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-ta ble/16/cf-standard-name-table.html#air_temperature plus: http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-ta ble/16/cf-standard-name-table.xml Cheers, Dom On 14/12/10 08:18, Lowry, Roy K. wrote: Dear All, Working to find a way of harmonising the two sources of web-served Standard Names is on by ‘To-Do’ list for next year (part of an issue list fed into the NETMAR project by John G.) Cheers, Roy. *From:* cf-metadata-boun...@cgd.ucar.edu [mailto:cf-metadata-boun...@cgd.ucar.edu] *On Behalf Of *John Graybeal *Sent:* 13 December 2010 22:28 *To:* Benno Blumenthal *Cc:* cf-metadata@cgd.ucar.edu *Subject:* Re: [CF-metadata] Web reference to a standard name? A minor clarification as to how MMI is doing things: Benno, all, On Dec 13, 2010, at 07:25, Benno Blumenthal wrote: We have tried to get standard URIs for CF concepts, but the effort bogged down. As for standard names, MMI established a set of URIs at http://marinemetadata.org/cf but has not been keeping up to date. Thanks for the mention. This is our older URL, sorry; we are now maintaining CF standard names in our ontology repository, using resolvable URLs. [1] There was a period when MMI was not keeping up to date with CF changes, but in the recent past we have been continuously updating the SKOS ontology for the parameter names at the site Carlos mentioned [1] (We will forward the misleading /cf URL above, or fix it to make clear in some other way the current status; thanks for calling that out.) As with Roy's handling, we provide URLs both for the current version at the reference URL, and for individual releases of the vocabulary. John [1] http://mmisw.org/ont/cf/parameter I have written a XSL transform at http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl that can be applied to http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name- table/16/cf-standard-name-table.xml to generate an up-to-date version, e.g. xsltproc http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name -table/16/cf-standard-name-table.xml On the other hand, Roy has created opaque URIs for standard names at http://vocab.ndg.nerc.ac.uk/list/P07/9 contains all the Standard Names that have ever been published, including names that have been aliased http://vocab.ndg.nerc.ac.uk/list/P071/9 contains the Standard Names that are currently valid (i.e. those that have not been deprecated through aliasing) http://vocab.ndg.nerc.ac.uk/list/P072/9 contains the Standard Names that have been deprecated through aliasing The mapping between deprecates and their replacement aliases my be obtained through the following API call
