Re: [netcdf-java] Reading attributes with unsigned data types

Gilbert, Allen D CTR USAF AFWA AFWA/WDA wrote:


Hello,
I am trying to use NetCDF Java 4.1 to read HDF5 files that contain datasets and attributes of type unsigned short. I am able to read the datasets correctly; when Array.isUnsigned() returns true, I widen each element to an int to retain the correct value. However, it seems that there is no way to determine whether or not an attribute value is unsigned once it is read, as the returned Array’s unsigned field does not get set to “true” for unsigned attribute values.
Is there a way to find out if an attribute value is unsigned in NetCDF Java? 

Thanks for your time!

-Allen


Hi Gilbert:
Im guessing that the HDF5 IOSP is not correctly setting Array.isUnsigned(). If you can send me a sample file, that would be helpful. 

John.