AW: AW: [gdal-dev] gdalwarp and GTiff creation option NBITS

[Fischer, Andreas]

Hi Frank,
thanks for your hints. I could finally use tiffinfo very easily from FWTools-Shell, for I'm testing with a windows machine :-)

So here are the outputs from tiffinfo for the different files. 
a) = original file

b) = original file transformed with gdalwarp
(gdalwarp -s_srs C:\Programme\FWTools2.4.6\proj_lib\25832.wkt -t_srs "+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0 +ellps=bessel +units=m +nadgrids=C:\Programme\FWTools2.4.6\proj_lib\BETA2007.gsb +wktext" -dstnodata 255 -srcnodata 255 -co NBITS=1 -co PROFILE=BASELINE -co TFW=YES -co INTERLEAVE=PIXEL K:\basisdaten\alk\raster\rk4dgk5\32395_5718.tif  C:\bearbeitung\alk\utm2gk\1bit\32395_5718.tif)

c) = transformed file opened with IrfanView and saved as copy

I hope these outputs will "talk to you". I will be glad to hear from you.

Thanks and best regards
Andreas


a) Original file 

TIFF Directory at offset 0x62ae6 (404198)
  Image Width: 11812 Image Length: 11812
  Bits/Sample: 1
  Compression Scheme: CCITT Group 4
  Photometric Interpretation: min-is-white
  FillOrder: lsb-to-msb
  Samples/Pixel: 1
  Rows/Strip: 5
  Planar Configuration: single image plane
  Software: Handmade Software, Inc. Image Alchemy v1.13


b) File transformed with gdalwarp (gdal-file)

TIFFReadDirectory: Warning, Unknown field with tag 42113 (0xa481) encountered.
TIFF Directory at offset 0x10a8036 (17465398)
  Image Width: 11812 Image Length: 11812
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: None
  Photometric Interpretation: palette color (RGB from colormap)
  Samples/Pixel: 1
  Rows/Strip: 5
  Planar Configuration: single image plane
  Color Map: (present)
  Tag 42113: 255


c) gdal-file (b) opened with IrfanView and saved as a copy without changes

TIFF Directory at offset 0x10a35bc (17446332)
  Image Width: 11812 Image Length: 11812
  Resolution: 0, 0 pixels/inch
  Bits/Sample: 1
  Compression Scheme: None
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 5
  Planar Configuration: single image plane
  Software: IrfanView
 

Mit freundlichen Grüßen
Im Auftrag

Andreas Fischer

Kreis Unna - Der Landrat
Zentrale Datenverarbeitung
Friedrich-Ebert-Straße 17
59425 Unna

Fon 02 3 03 27-44 16
Fax 0 23 03 27-28 96
andreas.fischer at kreis-unna.de
www.kreis-unna.de

-----Ursprüngliche Nachricht-----
Von: Frank Warmerdam [mailto:warmerdam at pobox.com] 
Gesendet: Samstag, 12. Juni 2010 01:10
An: Fischer, Andreas
Cc: gdal-dev at lists.osgeo.org
Betreff: Re: AW: [gdal-dev] gdalwarp and GTiff creation option NBITS

Fischer, Andreas wrote:
> Hello Frank,
> thanks for your reply. 
> Can you let me know how to create a tiffinfo report? What tool do I need to do so?

Andreas,

tiffinfo is a commandline utility which produces text output.  It is
generally available with libtiff.  In Debian/Ubuntu I think it is the
"libtiff-tools" package.  The tools are also available in OSGeo4W as
the libtiff-bin package.

You can also quite easily just build it locally from source as part of
the normal libtiff build.  After a build it will be in the libtiff/tools
directory (no need to actually do an install to run it).

Then just run it against the appropriate files and redirect the output
to a text file or cut and paste.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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