[Gdal-dev] gdalwarp UTM->TM

[Jun Wada]

Hello:
I have one problem about gdalwarp "UTM->TM".
Please let me know.
I tried to "UTM->TM" by using gdalwarp.
It made a TM-Image file and I checked it by using gdalinfo.
"Corner Coordinate"is OK but "DATUM" is "unknown" and also "SPHEROID" is
"unnamed".
I don't know why ?
When I executed the gdalwarp, I specified Tokyo in "DATUM" and bessel in
"SPHEROID" but...

UTM Image Specification:
C:\Temp\Gdal\gdal119\gdal-1.1.9\apps>gdalinfo po_utm54_0-2.tif
Driver: GTiff/GeoTIFF
Size is 6033, 6120
Coordinate System is:
PROJCS["unnamed",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.2572235630016,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    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["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","32654"]]
Origin = (392317.935490,3784982.868520)
Pixel Size = (1.000000,-1.000000)
Metadata:
  TIFFTAG_SOFTWARE=ERDAS IMAGINE
Corner Coordinates:
Upper Left  (  392317.935, 3784982.869) (139d49'52.43"E, 34d12'1.09"N)
Lower Left  (  392317.935, 3778862.869) (139d49'55.17"E, 34d 8'42.43"N)
Upper Right (  398350.935, 3784982.869) (139d53'48.13"E, 34d12'3.27"N)
Lower Right (  398350.935, 3778862.869) (139d53'50.71"E, 34d 8'44.61"N)
Center      (  395334.435, 3781922.869) (139d51'51.61"E, 34d10'22.87"N)
Band 1 Block=6033x8 Type=Byte, ColorInterp=Red
Band 2 Block=6033x8 Type=Byte, ColorInterp=Green
Band 3 Block=6033x8 Type=Byte, ColorInterp=Blue

gdalwarp command:
gdalwarptest -et 1.0 -rc -order 3 -t_srs "+proj=tmerc +zone=9 +ellps=bessel
+towgs84=-147.54,507.26,680.47,0,0,0 +k=0.9999 +units=m +to_meter=1.0
+lat_0=36
+lon_0=139.833333333 +datum=Tokyo" po_utm54_0-2.tif trans01.tif

C:\Temp\Gdal\gdal119\gdal-1.1.9\apps>gdalinfo trans01.tif
Driver: GTiff/GeoTIFF
Size is 6103, 6189
Coordinate System is:
PROJCS["unnamed",
    GEOGCS["unnamed",
        DATUM["unknown",
            SPHEROID["unnamed",6377397.155,299.1528128000009]],
        PRIMEM["Greenwich",0],
        UNIT[,0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",36],
    PARAMETER["central_meridian",139.833333333],
    PARAMETER["scale_factor",0.9999],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]]]
Origin = (98.686063,-199929.911644)
Pixel Size = (1.000169,-1.000169)
Corner Coordinates:
Upper Left  (      98.686, -199929.912) (139d50'3.86"E, 34d11'51.09"N)
Lower Left  (      98.686, -206119.960) (139d50'3.85"E, 34d 8'30.15"N)
Upper Right (    6202.720, -199929.912) (139d54'2.32"E, 34d11'51.02"N)
Lower Right (    6202.720, -206119.960) (139d54'2.16"E, 34d 8'30.08"N)
Center      (    3150.703, -203024.936) (139d52'3.05"E, 34d10'10.60"N)
Band 1 Block=6103x1 Type=Byte, ColorInterp=Red
Band 2 Block=6103x1 Type=Byte, ColorInterp=Green
Band 3 Block=6103x1 Type=Byte, ColorInterp=Blue

Best regards,