[gdal-dev] java Dataset.GetRasterBand(i).ComputeRasterMinMax not working for float data

[Ari Jolma]

28.01.2017, 13:45, Even Rouault kirjoitti:
>
> > Computed Min/Max=-340282306073709650000000000000000000000.000,2282.341
>
> > NoData Value=-3.4028229999999999e+038
>
> >
>
> >
>
> I've pushed a fix for that in
>
> https://trac.osgeo.org/gdal/changeset/37229
>

IMO it is not a good idea to use Inf's or such as no data values since 
comparisons of floating point values are non-reliable. I've hit this in 
the case where I set raster data from GDAL raster to a piddle in PDL 
(comparable to NumPy in Python world) for raster algebra. I didn't find 
a good solution then - I'll need to examine this changeset more and see 
if it provides a good solution to the problem.

Thanks,

Ari

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