[Geopriv] Re: CRS URN
"Carl Reed OGC" <creed@opengeospatial.org> Sun, 17 July 2005 23:48 UTC
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From: Carl Reed OGC <creed@opengeospatial.org>
To: Martin Thomson <martin.thomson@nortel.com>
References: <C0FA66CBDDF5D411B82E00508BE3A722115D4738@zctwc059.asiapac.nortel.com>
Date: Sun, 17 Jul 2005 17:47:50 -0600
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Cc: 'GEOPRIV' <geopriv@ietf.org>
Subject: [Geopriv] Re: CRS URN
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RE: CRS URNMartin - Have passed on your email to the CRS/GML gurus. Should have a response in a day or so. Regards Carl ----- Original Message ----- From: Martin Thomson To: Carl Reed OGC Cc: 'GEOPRIV' Sent: Sunday, July 17, 2005 5:20 PM Subject: RE: CRS URN Hi Carl, I'm sorry, I have to rise to the bait on this one. It's been bugging me. > <gml:Point gml:id="point96" srsName="http://www.opengis.org/CRScatalogue.xml#epsg_4326"> > <gml:pos>33.001111 96.68142</gml:pos> > </gml:Point> Can someone please standardize: urn:ogc:def:crs:EPSG:6.6:4326 http://www.opengis.org/CRScatalogue.xml#epsg_4326 urn:ogc:def:crs:EPSG:4326:6.6 urn:EPSG:geographicCRS:4326 epsg:4326 http://www.opengis.net/gml/srs/epsg.xml#4326 www.epsg.org#4326 urn:epsg:v6.6:coordinateReferenceSystem:4326 urn:ogc:def:crs:OGC:1.3:CRS84 All of these have been taken from standards body publications. It would be nice to only have to deal with one, maybe two URNs; 4326 for 2D, 4979 for 3D. PIDF-LO profile recommends the first, since that is published in OGC 05-010; but now I see yet another. Carl, are we right in using "urn:ogc:def:crs:EPSG:6.6:4326"? Can we expect to see more forms in the future? In other words, is there a need to do more than specify a common form and define a pattern, or means of parsing the URN? Cheers, Martin p.s. > <gml:location> Incidentally, I thought that the location element was deprecated.
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- [Geopriv] RE: CRS URN Martin Thomson
- [Geopriv] Re: CRS URN Carl Reed OGC