I'm having problems warping terrasar data, both strip and spot.
Everything seems to run smooth, but all resulting pixels are 0. Running
gdalinfo -mm on the original terrasar xml header file shows a decent
min/max, and opening the xml with openev shows the characteristic radar
speckle image. However, somehow gdalwarp seems to convert all values to 0.
I'm running gdal from svn.
This is the gdalinfo -mm on the original:
Driver: TSX/TerraSAR-X Product
Files: TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.xml
Size is 6432, 8123
Coordinate System is `'
GCP Projection =
GCP[ 0]: Id=, Info=
(3186,4061) ->
(4.58577884873432,-58.7378260671197,88.2895278671792)
GCP[ 1]: Id=, Info=
(1,1) -> (4.62120875202606,-58.6758682205696,88.2895278671792)
GCP[ 2]: Id=, Info=
(6354,1) -> (4.6416261082315,-58.7806954917766,88.2895278671792)
GCP[ 3]: Id=, Info=
(1,8123) -> (4.52969375238776,-58.6937801528285,88.2895278671792)
GCP[ 4]: Id=, Info=
(6353,8123) ->
(4.5500912421315,-58.7984603452316,88.2895278671792)
Metadata:
OPERATIONAL_MODE=operational
ORBIT_CYCLE=22
ABSOLUTE_ORBIT=3542
ORBIT_DIRECTION=DESCENDING
IMAGING_MODE=SL
PRODUCT_VARIANT=SSC
IMAGE_TYPE=COMPLEX
ROW_SPACING=6.06688654869458333E-09
COL_SPACING=1.78571426658891141E-04
AZIMUTH_LOOKS=1.00000000000000000E+00
RANGE_LOOKS=1.00000000000000000E+00
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 8123.0)
Upper Right ( 6432.0, 0.0)
Lower Right ( 6432.0, 8123.0)
Center ( 3216.0, 4061.5)
Band 1 Block=6432x1 Type=CInt16, ColorInterp=Undefined
Computed Min/Max=-1329.000,1444.000
Metadata:
POLARIMETRIC_INTERP=VV
I then run gdalwarp:
$ gdalwarp
TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.xml
TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.tif
Creating output file that is 8144P x 8994L.
Processing input file
TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.xml.
0...10...20...30...40...50...60...70...80...90...100 - done.
$ gdalinfo -mm
TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.tif
Driver: GTiff/GeoTIFF
Files: TSX1_SAR__SSC______SL_S_SRA_20080203T094750_20080203T094751.tif
Size is 8144, 8994
Coordinate System is `'
Origin = (4.529703226723088,-58.675978519735985)
Pixel Size = (0.000013777380802,-0.000013777380802)
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 4.5297032, -58.6759785)
Lower Left ( 4.5297032, -58.7998923)
Upper Right ( 4.6419062, -58.6759785)
Lower Right ( 4.6419062, -58.7998923)
Center ( 4.5858047, -58.7379354)
Band 1 Block=8144x1 Type=CInt16, ColorInterp=Gray
Computed Min/Max=0.000,0.000
See, I get georeferencing but lost all the data...
Cheers,
Vincent.
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