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

[Schindler, Fabian]

Even,

Thanks for the info. I guess in that case using the highest bit depth will
have to do.

Regarding the nodata value (just curius): how is this value stored (there
is no such tag, AFAIK)? In the GDAL data model this value is per band and
not per dataset, so that could be a possible improvement, right?

Regards,
Fabian

On Mon, 29 Oct 2018 at 11:44, Even Rouault <even.rouault at spatialys.com>
wrote:

> 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
>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
>
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