Yet another NITF related "problem". An ntf file contains (no SUBDATASETS)
gdalinfo -nogcp -nomd -mm M1BS.ntf ,--%<--- Band 1 Block=1024x1024 Type=UInt16, ColorInterp=Blue Computed Min/Max=183.000,2047.000 Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 Overviews: arbitrary Band 2 Block=1024x1024 Type=UInt16, ColorInterp=Green Computed Min/Max=252.000,2047.000 Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 Overviews: arbitrary Band 3 Block=1024x1024 Type=UInt16, ColorInterp=Red Computed Min/Max=86.000,2047.000 Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 Overviews: arbitrary Band 4 Block=1024x1024 Type=UInt16, ColorInterp=Alpha Computed Min/Max=50.000,2047.000 Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 Overviews: arbitrary `--->%-- Attempting to warp the data with the -rpc switch and convert to GeoTIFF, begins with "Using band 4 of source image as alpha." This results in an "empty" NIR band in the GeoTIFF file. ,--%<--- Band 1 Block=6728x1 Type=UInt16, ColorInterp=Gray Computed Min/Max=0.000,2047.000 Band 2 Block=6728x1 Type=UInt16, ColorInterp=Undefined Computed Min/Max=0.000,2047.000 Band 3 Block=6728x1 Type=UInt16, ColorInterp=Undefined Computed Min/Max=0.000,2047.000 Band 4 Block=6728x1 Type=UInt16, ColorInterp=Undefined Computed Min/Max=0.000,0.000 `--->%-- No success using '-co "ALPHA=NO"'. Same "problem" when using gdal_translate on the whole ntf file. However, instructing gdal_translate -b 4 M1BS.ntf b4.tif gives gdalinfo -nogcp -nomd -mm b4.tif ,--%<--- Band 1 Block=6876x1 Type=UInt16, ColorInterp=Gray Computed Min/Max=50.000,2047.000 `--->%-- But, this is not "fine". How is this to be done correctly, RPC-based warping and conversion in one go? Thanks, Nikos _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user