[GRASS-dev] GRASS - UDig projection definitions

[Andrea Antonello]

Hi developers,
I'm trying to make udig speak the same language as GRASS, but I found
one main issue, I'm not able to resolve.

GRASS and UDig use different projection definitions.
- in Grass the projection file is something like:
      name: Transverse Mercator
      proj: tmerc
      datum: rome40
      towgs84: -225.000,-65.000,9.000
      a: 6378388
      es: 0.0067226700
      lat_0: 0
      lon_0: 9
      k: 0.999600
      x_0: 1500000
      y_0: 0
      no_defs: defined

- whereas in UDig it is WKT:
      PROJCS["Monte Mario / Italy zone 1",
      GEOGCS["Monte Mario",
      DATUM["Monte_Mario",
      SPHEROID["International 1924", 6378388.0, 297.0,
AUTHORITY["EPSG","7022"]],
      AUTHORITY["EPSG","6265"]],
      PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
      UNIT["degree", 0.017453292519943295],
      AXIS["Lon", EAST],
      AXIS["Lat", NORTH],
      AUTHORITY["EPSG","4265"]],
      PROJECTION["Transverse_Mercator"],
      PARAMETER["central_meridian", 9.0],
      PARAMETER["latitude_of_origin", 0.0],
      PARAMETER["scale_factor", 0.9996],
      PARAMETER["false_easting", 1500000.0],
      PARAMETER["false_northing", 0.0],
      UNIT["m", 1.0],
      AXIS["x", EAST],
      AXIS["y", NORTH],
      AUTHORITY["EPSG","3003"]]

I'm no projection wizard, has anyone an idea about how I can go from one
to the other and back in an easy way?

Thanks for any help,
Cheers,
Andrea