First, the java code uses a home-built java implementation of HDF5. So, it is not clear what it does with compressed + fletcher files. Second, I am a bit confused, is this at its heart a problem with the netcdf-c library? Is the bug you report a bug in netcdf-c or netcdf-Java? =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: IAO-533024 Department: Support netCDF Java Priority: Normal Status: Closed