Hi,
It came into my mind that have you perhaps configured the bbox of your layer as "Compute from SRS bounds"? In that case I would try to set the bounds manually, or as "Compute from data". Maybe that could make GetFeatureInfo to work beyond the SRS bounds.
-Jukka Rahkonen-
-----Alkuperäinen viesti-----
Lähettäjä: Watermeyer, Andreas <Andreas.Watermeyer@anonymised.com>
Lähetetty: tiistai 25. huhtikuuta 2023 13.07
Vastaanottaja: Rahkonen Jukka <jukka.rahkonen@anonymised.com>; geoserver-devel@lists.sourceforge.net
Aihe: AW: CRS bbox for EPSG:3149 / Gauss-Krueger zone 5
Hi Jukka,
Ok, I got that, thanks.
And is it possible to adjust the bounds for a CRS in GeoServer?
Currently WMS GetFeatureInfo stays empty when queried outside the extend of the CRS, although data is there.
Best regards,
Andreas
-----Ursprüngliche Nachricht-----
Von: Rahkonen Jukka <jukka.rahkonen@anonymised.com>
Gesendet: Dienstag, 25. April 2023 11:42
An: Watermeyer, Andreas <Andreas.Watermeyer@anonymised.com>; geoserver-devel@anonymised.comsts.sourceforge.net
Betreff: VS: CRS bbox for EPSG:3149 / Gauss-Krueger zone 5
[Externe E-Mail] Vorsicht beim Öffnen von Links und Anhängen. / Be careful when opening links and attachments.
Hi,
I do not know the history in the background, but for me it looks like the coordinate system itself is a normal 3 degree wide GK zone and transformations and conversions and whatever would mathematically work correctly over the whole 3 degree wide area. However, that national mapping agency has defined that code EPSG:31469 is only used in West Germany and more strict on the area of the state of Bayern. EPSG registry has registered the coordinate system based on that information.
There is a change request from year 2006 "For areas 1625-27, removed former East German states."
And in 2011 there is a change request "For CRSs 31466-69, added remarks regarding offshore geological survey usage" that expands the area of use as a description.
So technically I would trust that EPSG:31469 can be used over the 3-degree area, but the BBOX that Geoserver shows is correct and matches with the information from EPSG and initially from the German authorities. The EPSG database has only place for ultimate N-S-E-W coordinates and therefore even the BBOX is larger than the real area of use, that follows the border between former West and East Germany.
-Jukka Rahkonen-
-----Alkuperäinen viesti-----
Lähettäjä: Watermeyer, Andreas <Andreas.Watermeyer@anonymised.com>
Lähetetty: tiistai 25. huhtikuuta 2023 12.08
Vastaanottaja: Rahkonen Jukka <jukka.rahkonen@anonymised.com>; geoserver-devel@lists.sourceforge.net
Aihe: AW: CRS bbox for EPSG:3149 / Gauss-Krueger zone 5
Hi Jukka,
thanks for your response! I know that site - I find it also confusing. For what I can say the bbox mentioned there is too small, too.
From that site:
Name:
Germany - West Germany - east of 13.5°E
Description:
Germany - former West Germany onshore east of 13°30'E - state of Bayern.
Extends:
13.5 ° - 13.84 °, 48.98 ° - 48.51 °
Conversion:
3-degree Gauss-Kruger zone 5
Remarks:
Zone width 3 degrees. Also used offshore by State Geological Surveys
So, to me is unclear:
* why do "conversion" and "remarks" say it is a 3 degree width but the extend only cover 13.5 ° - 13.84 °
* what means "conversion" ?
Thank you and best regards,
Andreas
-----Ursprüngliche Nachricht-----
Von: Rahkonen Jukka <jukka.rahkonen@anonymised.com>
Gesendet: Dienstag, 25. April 2023 09:50
An: Watermeyer, Andreas <Andreas.Watermeyer@anonymised.com>; geoserver-devel@anonymised.comsts.sourceforge.net
Betreff: Re: CRS bbox for EPSG:3149 / Gauss-Krueger zone 5
[Externe E-Mail] Vorsicht beim Öffnen von Links und Anhängen. / Be careful when opening links and attachments.
Hi,
The right place to look at the CRS definitions is the official site "epsg.org". So not "epsg.io" nor "spatialreference.org" which have been created because especially in the past the epsg.org site was very unfriendly to use. The link for the CRS is https://epsg.org/crs_31469/DHDN-3-degree-Gauss-Kruger-zone-5.html and the extent is defined as "Germany - former West Germany onshore east of 13°30'E - state of Bayern." The link to the extent is https://epsg.org/extent_1627/Germany-West-Germany-east-of-13-5-E.html
In decimal degrees the limits are
S:48.51 , N:48.98, E:13.5, W:13.84
Geoserver seems to have correct extent values.
-Jukka Rahkonen-
-----Alkuperäinen viesti-----
Lähettäjä: Watermeyer, Andreas <Andreas.Watermeyer@anonymised.com>
Lähetetty: tiistai 25. huhtikuuta 2023 10.10
Vastaanottaja: geoserver-devel@lists.sourceforge.net
Aihe: [Geoserver-devel] CRS bbox for EPSG:3149 / Gauss-Krueger zone 5
Hi community,
I don't understand the bbox GeoServer is using for EPSG:31469.
In the list of crs in the demo section of the admin ui GeoServer shows the following values as bounds:
48°58'48,0"N, 13°30'00,0"E - 48°30'36,0"N, 13°50'24,0"E
According to https://spatialreference.org/ref/epsg/31469/ the bounds are:
WGS84 Bounds: 13.5000, 47.2700, 16.5000, 55.0600
* Why are the bounds in GeoServer so much smaller?
* Can I somehow reconfigure the bounds?
I read about epsg_ovverride.properties, but AFAICS the bounds are not part of the WKT.
Thanks in advance!
Best regards,
Andreas
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