Hi Leda, > I have to transform an ascii file to netcdf, I followed your suggestion > in this link: > http://www.unidata.ucar.edu/software/netcdf/workshops/2007/bestpractices/Misc.html > Now I have to add Global Attributes but I can't because it's necessary > to have a file in define mode. If the file already exist, because I > used ncgen utility how can I do? I think adding a dummy variable and > to associate attribute to it. It would probably be easiest to add the desired global attributes to your CDL file and run ncgen again. Have you read the "Writing NetCDF Files: Best Practices" document (http://www.unidata.ucar.edu/software/netcdf/docs/BestPractices.html)? It is a very good summary of things to think about when creating a netCDF file. The first section is about attribute convention which might be useful as you work on global attributes. Hope that helps. Ethan Ticket Details =================== Ticket ID: ABJ-407885 Department: Support netCDF Java Priority: Normal Status: Closed