[Gdal-dev] creating files with multiple-bands with different data types

Frank Warmerdam warmerdam at pobox.com
Tue Feb 13 16:47:22 EST 2007

Dadi, Upendra wrote:
> Hi,
>    Is it possible using GDAL to create Geotiff files with multiple bands 
> with each band having a different data type? 


No, GDAL does not support creating or reading such files.

 > Does Geotiff standard even allow that?

This is legal in the TIFF specification, but non-baseline.  I however
consider it perverse. :-)

 > I want to merge multiple Geotiff files, each file containing
> a single band, into a single geotiff file. The data types of the single 
> band files are all different. The data type of each band should be 
> preserved during with transformation. Is it possible? Any help is 
> greatly appreciated. Thanks.

Perhaps what you need to do is append them into one GeoTIFF file with
each band as a seperate image directory.   In this case different types
are ok.  Nevertheless, it will still be quite hard to create or utilize
such images with GDAL.

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    | President OSGeo, http://osgeo.org

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