[gdal-dev] Remapping nodata

[Julien Michel]

Well, maybe this is a little off topic for the gdal mailing list, but I 
recently had to deal with the same case, and wrote a small application 
in Orfeo ToolBox (>5.2) to do exactly that: map NaN to a real no data 
value [1]. So if you need this really quick, and can afford bringin 
another (quite big) tool in your workflow, here is a workaround.

In the long term, this would be a nice addition to gdal_translate 
capabilities.

Regards,

Julien

[1] https://www.orfeo-toolbox.org/CookBook/CookBooksu61.html#x85-1900004.1.7

Le 06/01/2016 23:59, Brad Hards a écrit :
> I'm working on the geopackage elevation extension experiment, and trying to
> produce some GeoTIFF tiles that get inserted into sqlite.
>
> I need to remap the existing nodata (nan) to some other value that I can
> insert into a sqlite table as a number (say zero).
>
> I had a long explanation of what I'm doing here, but it is actually explained
> in the docs: "Note that, if the input dataset has a nodata value, this does
> not cause pixel values that are equal to that nodata value to be changed to
> the value specified with this option. "
>
> Is there an easy way to do that conversion?
>
> Brad
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-- 
Julien MICHEL
CNES - DCT/SI/AP