The H5R_GET_REGION function retrieves a dataspace associated with a region reference.
            Example
            Assuming the file, 'hdf5_out.h5' was created using the example in H5F_CREATE, the dataspace region saved in the reference attached to the “Hanning” dataset could be obtained as follows:
            fid = H5F_OPEN('hdf5_out.h5')
            dataset_id = H5D_OPEN(fid,'Hanning')
            attr_id = H5A_OPEN_NAME(dataset_id,'Ref')
            ref = H5A_READ(attr_id)
            dataspace_id = H5R_GET_REGION(dataset_id,ref)
            Syntax
            Result = H5R_GET_REGION(Dataset_id, Reference)
            Return Value
            The Result gives the identifier of the dataspace with the region selected.
            Arguments
            Dataset_id
            An integer giving the identifier in which the reference dataset is located.
            Reference
            An H5 reference structure giving the reference number to open.
            Keywords
            None
            Version History
            
            See Also
            H5R_CREATE, H5D_CREATE, H5D_CLOSE