[gdal-dev] Custom geographic coordinate system and non valid translation

[Rodolfo Bonnin]

Hello all,

I'm trying to define a UTM projected coordinate system, with a custom
geographic coordinate system, to have a system similar to the geocentric
ITRF97, in gdal 1.8, which doesn't support that type.

 Part of the gdalinfo output  is:



_________________________________________________________________

PROJCS["UTM",
    GEOGCS["ITRF97 (wgs84 equivalent)",
        DATUM["International_Terrestrial_Reference_Frame_1997",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            TOWGS84[0,0,0,0,0,0,0],
            AUTHORITY["EPSG","6655"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",141],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["Meter",1]]
GeoTransform =
  -14448629.2184734, -141.4557903812352, -1.43564504297578
  12357184.49239378, 14.97393042715653, 208.8248508563648
Metadata:
  PROJECTION_NAME=
Corner Coordinates:
Upper Left  (-14448629.218,12357184.492) (  0d 0' 0.01"E, 90d 0' 0.00"N)
Lower Left  (-14458678.734,13818958.448) (  0d 0' 0.01"E, 90d 0' 0.00"N)
Upper Right (-15472486.229,12465565.801) (  0d 0' 0.01"E, 90d 0' 0.00"N)
Lower Right (-15482535.745,13927339.757) (  0d 0' 0.01"E, 90d 0' 0.00"N)
Center      (-14965582.482,13142262.125) (  0d 0' 0.01"E, 90d 0' 0.00"N)


________________________________________________________________

As you see the geographic coordinate system don't translate the corners
projected coordinates into the geographic ones.

Am I missing a parameter or is some concept wrong with the chosen wkt ?

Many thanks in advance.

-- 
Ing. Rodolfo Bonnin
SUR Emprendimientos Tecnológicos

Perú 345  Piso 5to Oficina "B" (C1067AAG)
Ciudad de Buenos Aires, Argentina
Tel. +54 (11) 4342-2976/84
rodolfobonnin at suremptec.com.ar
www.suremptec.com
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