[Mapbender-users] Create new EPSG to geoserver for Brandenburg

Buchholz, Robert Robert.Buchholz at LUA.Brandenburg.de
Thu Jun 5 11:08:31 EDT 2008

Dear list, specially to the users of MapBender and GeoServer in Brandenburg (spatial data from Brandenburg),

maybe this is more relating to the geoservers community, but i run into geoserver from MapBender (WFS-T).
Concerning to the use of geoserver displaying spatial data in Brandenburg (Germany)i can offer a solution concerning projection EPSG 25833.
A common problem is the false easting resulting of x-coordinates with 7 numbers (resulting from datamanagement-history). For example x=3420000. In "real" projection the starting "3" is problematic, because on EPSG 25833 it leads to a "misprojection" of 3000000m east.
In order to solve this -one chance is to define a new projection for geoserver.

Add to the end a new projection (325833-not conform to standard, but practicable):

325833=PROJCS["ETRS89 / UTM zone 33N", GEOGCS["ETRS89", DATUM["European Terrestrial Reference System 1989", SPHEROID["GRS 1980", 6378137.0, 298.257222101, AUTHORITY["EPSG","7019"]], TOWGS84[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], AUTHORITY["EPSG","6258"]], PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295], AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH], AUTHORITY["EPSG","4258"]], PROJECTION["Transverse Mercator", AUTHORITY["EPSG","9807"]], PARAMETER["central_meridian", 15.0], PARAMETER["latitude_of_origin", 0.0], PARAMETER["scale_factor", 0.9996], PARAMETER["false_easting", 3500000.0], PARAMETER["false_northing", 0.0], UNIT["m", 1.0], AXIS["Easting", EAST], AXIS["Northing", NORTH], AUTHORITY["EPSG","325833"]]

Save file!
Do not forget to restart GeoServer!
Mapbender User actualise service!

Hope that helps,

Robert Buchholz
Sachbearbeiter (Trainee)
Referat GIS-Zentrale
Landesumweltamt Brandenburg
Tel.: (033201)-442-127
Mail: Robert.Buchholz at LUA.Brandenburg.de 
Internet: http://www.brandenburg.de/lua
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