On Tue, 22 Dec 1992, Russ Rew wrote: > NetCDF Group Digest Tuesday, 22 Dec 1992 > Volume 1 : Issue 20 > > Subject: Answers to netCDF Questions > > 5: What is the connection between netCDF and CDF? > > A: CDF was developed ... > ... Though both formats make use of > the same conventional file extension (".cdf"), there is no compatibility > between data in CDF and netCDF form We use both netCDF and CDF and it would be convenient to distinguish between them using different conventional file extensions. I propose defining a new recommended file extension for netCDF. I suggest ".nc". ncgen appends the ".cdf" extension if "-o outputfile" is not specified. This appears to be the only place where ".cdf" is built into the standard netCDF software. I suggest a new flag (say -N) similar to -n, except that it would generate the new default file extension. Note that -n would be retained for compatibility and would still produce ".cdf". It would be necessary to modify the "NetCDF User's Guide". I suggest it should mention both the new recommended extension & the old obsolete ".cdf".