I think I misspoke. There are two possibilities 1. have ncgen generate ncml corresponding to some existing netcdf-4 .nc file or 2. have ncgen read an ncml file and generate a corresponding netcdf-4 .nc file. Which did you mean? =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: BAR-930850 Department: Support netCDF Priority: Normal Status: Closed