[gdal-dev] Error: Unable to export GeoTIFF file with different datatypes per different bands. All bands should have the same types in TIFF.

[Even Rouault]

Fabian,

> 
> I just tried to convert a Cloudsat (2B-GEOPROF to be exact) to a TIFF. I
> try to do this using the Python bindings and creating a VRT [3] referencing
> the Subdatasets of the HDF 4 file.

I'd also note that you use different nodata value per band, which isn't 
supported by the GTiff driver.

> 
> When I try to do this, I get the following error:
> 
> "Unable to export GeoTIFF file with different datatypes per different
> bands. All bands should have the same types in TIFF."
> 
> The TIFF spec allows to define the dataset for each sample ([1] and [2]),
> but it seems that GDAL does not support it.

The limitation comes from libtiff itself. Would certainly be a significant 
change in it and in the GDAL GTiff driver.
You can force all the bands on the highest bit depth.

Even

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