[Gdal-dev] gdal_translate : -a_ullr fail in specific case

[guillaume huby]

Hello,

I met some trouble using -a_ullr option in some case. I have a file
input.tif :
> gdalinfo input.tif
Driver: GTiff/GeoTIFF
Files: input.tif
Size is 1026, 1076
Coordinate System is `'
Corner Coordinates:
Upper Left  (    0.0,    0.0)
Lower Left  (    0.0, 1076.0)
Upper Right ( 1026.0,    0.0)
Lower Right ( 1026.0, 1076.0)
Center      (  513.0,  538.0)
Band 1 Block=1026x7 Type=Byte, ColorInterp=Palette
  Color Table (RGB with 256 entries)
... blabla

I try to translate it :
> gdal_translate -a_ullr 0.000000000000 0.000000000000 1026.000000000000 -
1076.000 input.tif output.tif

process OK, but :
> gdalinfo output.tif
Driver: GTiff/GeoTIFF
Files: output.tif
Size is 1026, 1076
Coordinate System is `'
Corner Coordinates:
Upper Left  (    0.0,    0.0)
Lower Left  (    0.0, 1076.0)
Upper Right ( 1026.0,    0.0)
Lower Right ( 1026.0, 1076.0)
Center      (  513.0,  538.0)
Band 1 Block=1026x7 Type=Byte, ColorInterp=Palette
  Color Table (RGB with 256 entries)
... blabla

While I expected this kind of result :
Driver: GTiff/GeoTIFF
Files: output.tif
Size is 1026, 1076
Coordinate System is `'
Origin = (1.000000000000000,1.000000000000000)
Pixel Size = (1.000000000000000,-1.000000000000000)
Corner Coordinates:
Upper Left  (   1.0000000,   1.0000000)
Lower Left  (       0.000,   -1076.000)
Upper Right (    1026.000,       0.000)
Lower Right (    1026.000,   -1076.000)
Center      (     513.000,    -538.000)
Band 1 Block=1026x7 Type=Byte, ColorInterp=Palette
  Color Table (RGB with 256 entries)
... blabla

If I change one value of -a_ullr, everything is OK, but for those specific
values, it doesn't work ! Is it normal or is it a bug ?

Thanks for your replies.

Best regards,
Guillaume.
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