[QGIS-trac] Re: [Quantum GIS] #3630: Coordinate reference system ETRS89/UTM zone 33N (EPSG: 25833) is wrong

[Quantum GIS]

#3630: Coordinate reference system ETRS89/UTM zone 33N (EPSG: 25833) is wrong
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   Reporter:  monokultur                        |              Owner:  nobody       
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.7.0
  Component:  Projection Support                |            Version:  1.6.0        
   Keywords:                                    |   Platform_version:  10.6.6       
   Platform:  OS X                              |           Must_fix:  Yes          
Status_info:  0                                 |  
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Changes (by jef):

  * priority:  critical: causes crash or data corruption => major: does not
               work as expected


Comment:

 Replying to [comment:4 monokultur]:
 > The attached file shows some fields in north-east germany. you can check
 with the digital ortho photos (wms-server url: http://www.geodaten-
 mv.de/dienste/adv_dop) if they are at the right place (the photos are
 visible only at a certain scale)

 In [[http://spatialreference.org/ref/epsg/25833/ EPSG:25833]] the x
 coordinates usually has only 6 digits.  Unfortunately what MV (and also
 Brandenburg) calls EPSG:25833 is EPSG:25833 with an offset of 33000000m
 (and formerly only 3000000m).  On [[http://www.geoportal-mv.de/land-
 mv/GeoPortalMV_prod/de/Geowebdienste/Hinweise_Geowebdienste/index.jsp#epsgportal
 Hinweise Geowebdienste - GeoPortal Mecklenburg-Vorpommern] this is called
 EPSG:35833 and explictly marked as not OGC conformant.    I've also found
 [[http://gdi.berlin-brandenburg.de/papers/gap.pdf sources]] that call this
 BBG:25833 and also have "our" definition of EPSG:25833.

 I'm not sure how we should deal with this.

 BTW assigning a user defined CRS with {{{+proj=tmerc +lon_0=15
 +ellps=GRS80 +k=0.9996 +units=m +datum=WGS84 +x_0=33500000}}} puts the
 shape exactly on the above WMS in EPSG:4326.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/3630#comment:5>
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