Dear list,
after lots of try and errors i can offer a solution concerning projection of spatial data in Brandenburg (Germany).
A common problem is the false easting resulting of x-coordinate 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.
Open:
C:/Geoserver1.5.4/data_dir/user_projections/epsg.properties
Add to the end a new projection (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!
If Mapbender User actualise service!
Hope that helps,
Robert
