Hi,
Thank you for the information. The situation now is that ArcMap as a WMS client
is making valid 1.3.0 GetMap EPSG:2393 requests but Mapserver gives wrong
response. Nice to know that the correction is planned already to 5.6.6. release.
-Jukka Rahkonen-
-Alkuperäinen viesti-
Lähettäjä: Yewondwossen Assefa [mailto:yass...@dmsolutions.ca]
Lähetetty: ke 24.11.2010 15:58
Vastaanottaja: Rahkonen Jukka
Kopio: mapserver-users@lists.osgeo.org
Aihe: Re: [mapserver-users] What to do with WMS 1.3.0 and axis order of
EPSG:2393?
Hi Jukka,
Issues that you raise here are discussed in the following bugs (as a
reference):
http://trac.osgeo.org/mapserver/ticket/3582
http://trac.osgeo.org/mapserver/ticket/3576
I think the idea of using ogr/gdal to reliably get the axis order is for
may the best option. In that case when we use wms1.3.0 and up, wfs 1.1
and up we always know that the axis order are the same regardless of the
format in which the epsg is given.
regards,
On 24/11/2010 8:04 AM, Rahkonen Jukka wrote:
Hi,
The Finnish KKJ projection EPSG:2393 belongs to those with axis order
Northing-Easting
http://www.epsg-registry.org/report.htm?type=selectionentity=urn:ogc:def:crs:EPSG::2393reportDetail=shortstyle=urn:uuid:report-style:default-with-codestyle_name=OGP%20Default%20With%20Codetitle=EPSG:2393
http://www.epsg-registry.org/report.htm?type=selectionentity=urn:ogc:def:crs:EPSG::2393reportDetail=shortstyle=urn:uuid:report-style:default-with-codestyle_name=OGP%20Default%20With%20Codetitle=EPSG:2393
However, Mapserver WMS 1.3.0 from MS version 5.6.5 does not honour the
official axis order but it is assuming the Easting-Northing BBOX also
with WMS 1.3.0. Any suggestions about how to solve this? In addition
to the two I have, to stay with WMS 1.1.1 or to start using UTM
projection with a real Easting-Northing axis order.
Problem is not only with Mapserver, GDAL based clients like QGis are
creating WMS 1.3.0 request with Easting-Northing BBOX for EPSG:2393.
Good is that QGIS and Mapserver play nicely together with WMS 1.3.0.
Bad is that it is not a fair play because they both are fooling with
the rules.
I was wondering if this could be handled somehow in a similar way than
Geoserver and deegree are doing it. They are following the
traditional Easting-Northing axis order if CRS is given as EPSG:2393.
But if CRS is given as
urn:ogc:def:crs:EPSG::2393 they are using the axis order that is
defined in the EPSG database. This is a little bit fiddling with the
standard, but the urn-format is the official one and the alternative
short format gives better possibilities for success for the end user
of ready made WMS/WFS clients.
-Jukka Rahkonen-
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Assefa Yewondwossen
Software Analyst
Email: yass...@dmsolutions.ca
http://www.dmsolutions.ca/
Phone: (613) 565-5056 (ext 14)
Fax: (613) 565-0925
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