[Proj] Campo Inchauspe towgs84 parameters?
Markus Neteler
neteler at itc.it
Fri Nov 11 09:06:46 EST 2005
Dear list members,
we try to figure out the Campo Inchauspe to WGS 84 parameters to
reproject LANDSAT7 data from CONAE:
gdalinfo L71229083_08320020426_HTM.FST
Driver: FAST/EOSAT FAST Format
Size is 6920, 5960
Coordinate System is:
PROJCS["unnamed",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9108"]],
AXIS["Lat",NORTH],
AXIS["Long",EAST],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-66],
PARAMETER["scale_factor",1],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",10002288.3],
UNIT["Meter",1]]
GeoTransform =
548152.569386061, 29.49069590981356, -5.504468031548917
6435853.497547253, -5.504408151466975, -29.49068635677127
Metadata:
ACQUISITION_DATE=20020426
SATELLITE=LANDSAT7
SENSOR=ETM+
BIAS1=0.000000000000000
GAIN1=0.066823529411765
BIAS2=3.200000000000000
GAIN2=0.037058823529412
Corner Coordinates:
Upper Left ( 548152.569, 6435853.498) ( 65d29'21.08"W, 32d13'14.35"S)
Lower Left ( 515345.940, 6260089.007) ( 65d50'3.36"W, 33d48'23.03"S)
Upper Right ( 752228.185, 6397762.993) ( 63d18'55.40"W, 32d32'11.40"S)
Lower Right ( 719421.556, 6221998.502) ( 63d37'17.87"W, 34d 7'36.72"S)
Center ( 633787.063, 6328926.000) ( 64d33'56.11"W, 33d10'39.39"S)
Band 1 Block=6920x1 Type=Byte, ColorInterp=Undefined
Band 2 Block=6920x1 Type=Byte, ColorInterp=Undefined
The LANDSAT7 header does not contain the towgs84 parameters.
So I was looking at the EPSG 6.4/6.8 SQL databases which do contain these
parameters:
epsg_v68: Query Results
coord_op_name coord_op_method_name parameter_name sort_order parameter_value unit_of_meas_name area_name
Campo Inchauspe to WGS 84 (1) Geocentric translations X-axis translation
1 -148 metre Argentina
Campo Inchauspe to WGS 84 (1) Geocentric translations Y-axis translation
2 136 metre Argentina
Campo Inchauspe to WGS 84 (1) Geocentric translations Z-axis translation
3 90 metre Argentina
However, we found different parameters mentioned in the Grids & Datums column
"THE REPUBLIC OF ARGENTINA" (12/1999), at
http://www.asprs.org/resources/grids/12-99-argentina.pdf
It is correct to use the parameters of EPSG?
If so, would it be possible to add them to the PROJ4 EPSG file?
Thanks in advance
Markus Neteler
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