[gdal-dev] gdal_translate help

[Even Rouault]

Matthew ,

Basically, you need to specify 2 creation options to allow georeferencing 
information and color table to be written. This 2 creation options allocate 
the necessary space in the header of the NITF file so they can be later 
overriden.

Try:
gdalwarp run.tiff -of nitf run1.nitf -co ICORDS=G -co IREP=RGB/LUT

For complete reference, look at http://gdal.org/frmt_nitf.html, especially 
the "Creation Issues" part.

Best regards,
Evn

Le Wednesday 24 June 2009 10:06:06 Matthew Golczak, vous avez écrit :
> Hi Frank,
> Thank you very much for your suggestion. I've followed your idea with 
> success . I've got nitif file with geo-spatial references but gdalwarp 
> during execution was not entirely happy   please see output dump. gdalwarp
> run.tiff -of nitf    run1.nitf
> Copying color table from run1linux.tiff to new file.
> Creating output file that is 12595P x 1851L.
> ERROR 6: NITF file should have been created with creation option
> 'ICOORDS=G'.
>
> ERROR 6: Apparently no space reserved for IGEOLO info in NITF file.
> NITFWriteIGEOGLO() fails.
> ERROR 1: Unable to write all 256 LUT entries, only able to write 0.
> Processing input file run1linux.tiff.
> 0...10...20...30...40...50...60...70...80...90...100 - done.
> I'm not sure that those two errors are critical especially that I have got
> nitif image which is correctly displayed by openev and ESRI tools. In this
> circumstance could you comment those errors and advice me  what needs to be
> done to eliminate those errors? Thank you very much for your advice .
>
> regards
>
> Maciek
>
> --- On Tue, 6/23/09, Frank Warmerdam <warmerdam at pobox.com> wrote:
> > From: Frank Warmerdam <warmerdam at pobox.com>
> > Subject: Re: [gdal-dev] gdal_translate help
> > To: "Matthew Golczak" <mgolczak at yahoo.com>
> > Cc: gdal-dev at lists.osgeo.org
> > Date: Tuesday, June 23, 2009, 4:37 PM
> >
> > Matthew Golczak wrote:
> > > Hello, I’m new to gdal concept and I’ll appreciate
> >
> > if you could help me. I’m
> >
> > > trying to use gdal_translate to geo-referencing aerial
> >
> > images but with
> >
> > > limited success so far. The image is generated as gif
> >
> > file plus
> >
> > > information about geo-location of each corner. Due to
> >
> > the fact that the
> >
> > > corner geo-location is calculated based on GPS, the
> >
> > datum and projection is
> >
> > > specified as EPSG:4326. The following translation
> >
> > works very well for me gdal_translate -of GTiff -a_srs
> > EPSG:4326 -gcp 0 0 138.792939 -34.721669
> >
> > > -gcp 1784 0 138.791485 -34.753698 -gcp 0 12515
> >
> > 138.519595 -34.713290 -gcp
> >
> > > 1784 12515 138.518036 -34.745320  run.gif
> >
> > run.tiff but I need also this
> >
> > > image in nitif format  so I have tried  the
> >
> > following  translation gdal_translate -of nitf run1tiff
> > run.nitf.  Unfortunately in this case
> >
> > > nitif file has not any geospatial references. 
> >
> > The gdalinof in regards to
> >
> > > tiff contains geospatial information and none in
> >
> > respect to nitif.  It seems
> >
> > > to me that is something wrong but what? Any support in
> >
> > this matter highly
> >
> > > appreciated.
> >
> > Maciek,
> >
> > The GDAL NITF driver does not support writing GCPs in NITF
> > format.  In fact,
> > I'm not aware of a general mechanism for storing GCPs in
> > NITF format.  I
> > think you will need to georeference it using affine
> > georeferencing.  If
> > the image is not north up, you may need to rectify the
> > image first with
> > gdalwarp.  In fact gdalwarp can write directly to nitf
> > format so perhaps
> > you could do:
> >
> > eg.
> >
> > gdalwarp run.tiff -of NITF run.nitf
> >
> > Best regards,
> > --
> > ---------------------------------------+---------------------------------
> >----- I set the clouds in motion - turn up   |
> > Frank Warmerdam, warmerdam at pobox.com
> > 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 at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev