Hi Limei: Open the file with NetcdfDataset.openDataset() and it will automatically take care of add_offset, scalar_factor, and missing_value, assuming it follows the convention correctly see http://www.unidata.ucar.edu/software/netcdf-java/tutorial/NetcdfDataset.html Ticket Details =================== Ticket ID: GGI-373709 Department: Support netCDF Java Priority: Normal Status: Open