Frank, With the specified block size the problem has been resolved. Thank you very much.
Mo -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Frank Warmerdam Sent: Wednesday, September 17, 2008 4:00 PM To: Mo Wang Cc: gdal-dev@lists.osgeo.org Subject: Re: [gdal-dev] Problem in viewing NITF images created by GDAL_TRANSLATE On Wed, Sep 17, 2008 at 2:26 PM, Mo Wang <[EMAIL PROTECTED]> wrote: > Hi all, > > > > I used gdal_translate to make a complete copy of a nitf file and it ran to > completion. But the output image file can only be viewed partially on a > IMAGINE Viewer while the whole original image file can be viewed on the > Viewer. I believe that the data is there just it can not be viewed. Mo, It looks like the NITF writer normally writes the entire NITF file as a single block image (regardless of the blocking of the input image). Possibly a single large block causes problems for imagine, though I'm not sure why that would be. You can force blocking using the BLOCKXSIZE and BLOCKYSIZE parameters. So,if you add -co BLOCKXSIZE=1024 -co BLOCKYSIZE=1024 when running gdal_translate you should get 1024x1024 tiles. Check if that helps. Note that the GDAL NITF writer is not really very sophisticated, and will often be inadequate to reproduce an original NITF given as input. However, it is certainly my intent that it should produce a valid file. Best regards, -- ---------------------------------------+-------------------------------- ------ I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
