[auscope-geosciml] RE : 4326 axis order

Boisvert, Eric Eric.Boisvert at RNCan-NRCan.gc.ca
Sat Oct 23 13:41:38 EDT 2010


I know.  Sorry, I badly phrased it.
 
EPSG fixed the axis order.  This change is reflected in GML 3.2 examples (while 3.1.1 examples were 'wrong') therefore we decided (GWIE) to use GML 3.1.1 -> 3.2 transition to fix the axis order in our SOS services.
 
GWML service will follow the same logic (we mediate from heterogenous services, so it's something we must check).  I don't know how Snowflake or GeoServer or new version of Deegree will handle this.
 
Eric
 

________________________________

De: auscope-geosciml-bounces at lists.arcs.org.au de la part de Simon.Cox at csiro.au
Date: sam. 2010-10-23 09:33
À: auscope-geosciml at lists.arcs.org.au
Objet : Re: [auscope-geosciml] 4326 axis order



It's not GML that made this decision, it is EPSG.

Simon Cox
Research Scientist
CSIRO Earth Science & Resource Engineering

Phone: +61 8 6436 8639 | Fax: +61 8 6436 8555 | Mobile: 0403 302 672
simon.cox at csiro.au<mailto:lyndelle.broadfoot at csiro.au> | www.csiro.au<http://www.csiro.au/>
Address: ARRC, PO Box 1130, Bentley, WA 6102, Australia
________________________________
From: auscope-geosciml-bounces at lists.arcs.org.au [auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of Boisvert, Eric [Eric.Boisvert at RNCan-NRCan.gc.ca]
Sent: Friday, 22 October 2010 8:31 PM
To: auscope-geosciml at lists.arcs.org.au
Subject: [auscope-geosciml] 4326 axis order



Another thing that we should be aware of, is that GML 3.2 fixes (at least in the documentation) the axis order of EPSG:4326, which is y,x and not x,y.

http://www.ogcnetwork.net/node/491

This means that we must be careful that WFS services actually honour the axis order.

For the Groundwater Interoperability Experiment, we suggested that services that generates 3.1.1 GML and older will use x,y axis order while GML above 3.1.1 will use y,x axis order.

Eric

================================================================
Eric Boisvert
Spécialiste TI-GI / IT-IM specialist
Eric.Boisvert at rncan.gc.ca, 418-654-3705, facsimile/télécopieur
418-654-2615
490, rue de la Couronne, Québec (Québec), G1K 9A9
490, rue de la Couronne, Quebec, Quebec, G1K 9A9

Laboratoire de cartographie numérique et de photogrammétrie (LCNP)
Digital Cartography and Photogrammetry Laboratory (DCPL)
Commission géologique du Canada (Québec) / Geological Survey of Canada (Quebec)
Ressources naturelles Canada / Natural Resources Canada
Gouvernement du Canada / Government of Canada
http://cgc.rncan.gc.ca/org/quebec
http://cgc.rncan.gc.ca/dir/index_f.php?id=4186 / http://cgc.rncan.gc.ca/dir/index_e.php?id=4186



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