[Gdal-dev] Computing MinMax on a NETCDF subdataset

[Frank Warmerdam]

Joaquim Luis wrote:
> Hi,
> In my gdalread MEX file I have this call
> 
> GDALComputeRasterMinMax(hBand, FALSE, adfMinMax);
> 
> which, in case of reading a NETCDF file, is returning
> 
> adfMinMax[0] = 0  and adfMinMax[1] = 0
> or
> adfMinMax[0] = -4294967295.0  and adfMinMax[1] = 4294967295.0
> if I change to
> GDALComputeRasterMinMax(hBand, TRUE, adfMinMax);
> 
> Note that I'm using this (example)
> Z =  gdalread('NETCDF:"D:\SVN\global.nc":z');
> which is the correct way of using this MEX, confirmed by the fact that Z 
> has the correct values.
> 
> For all other formats that I have tested, the min/max is correct.
> 
> Is this on purpose or a feature?

Joaquim,

This is not expected behavior.  Could you provide the global.nc file for me
to do some testing with?  Perhaps best to file this as a problem bug so I
can keep track of it.

Best regards,
-- 
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