Hi,
Checking the list of projections supported by default in GeoServer 1.5.1
and i see EPSG:28992 in the list:
PROJCS["Amersfoort / RD New",
GEOGCS["Amersfoort",
DATUM["Amersfoort",
SPHEROID["Bessel 1841", 6377397.155, 299.1528128,
AUTHORITY["EPSG","7004"]],
TOWGS84[565.04, 49.91, 465.84, -0.40939438743923684,
-0.35970519561431136, 1.868491000350572, 0.8409828680306614],
AUTHORITY["EPSG","6289"]],
PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
UNIT["degree", 0.017453292519943295],
AXIS["Geodetic longitude", EAST],
AXIS["Geodetic latitude", NORTH],
AUTHORITY["EPSG","4289"]],
PROJECTION["Oblique Stereographic", AUTHORITY["EPSG","9809"]],
PARAMETER["central_meridian", 5.387638888888891],
PARAMETER["latitude_of_origin", 52.15616055555556],
PARAMETER["scale_factor", 0.9999079],
PARAMETER["false_easting", 155000.0],
PARAMETER["false_northing", 463000.0],
UNIT["m", 1.0],
AXIS["Easting", EAST],
AXIS["Northing", NORTH],
AUTHORITY["EPSG","28992"]]
Lobo wrote:
Hi,
For the project I am currently working on I have received historical
maps of Holland. The maps use the RD (Rijksdriehoeksmeting) coordinate
system, also known as EPSG:28992. It is not available in any SRS code
in Geoserver. My questions are:
- Is it possible for me to add the SRS to the list in geoserver and
also to postgis?
Yes, if you have the well known text representation of the crs you can
add it to geoserver here:
http://docs.codehaus.org/display/GEOSDOC/Custom+projection+definition+in+Geoserver+1.5.0+(onwards)
And with postgis i believe you just have to insert the necessary values
into into the spatial_ref_sys table.
- IF ANSWER YES: Does anybody already have the right SRS codes to do
so? Will Geoserver/Postgis be able to convert the SRS to EPSG:4326 so
that I can show the map in Google Earth?
Yup, geoserver will convert to EPSG:4326 on the fly when you request
that coordinate reference system.
- IF ANSWER NO: Can I convert the RD coordinates to the European
standard ETRS:89 and then have Postgis/Geoserver convert the
coordinates on the fly to EPSG:4326 for Google Earth?
- IF ANSWER TWO TIMES NO: Is the only way for me show the same data in
Google Earth by converting (hard-coded) to EPSG:4326?
Thanks,
Lobo
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Justin Deoliveira
The Open Planning Project
jdeolive@anonymised.com