Netcdf-3 does not allow dimensions (apart from unlimited dimension) to
have a size of 0 (although I recall a decision at a netcdf-3 design
meeting in 1996 to allow size 0).
It is probably not worthwhile fixing this in netcdf-3, given the
immanent change to netcdf-4. Does netcdf-4 allow dimensions with size
0? If not, then I urge the developers to allow them.
Things like empty strings and empty sets are useful. Zero is one of
man's great inventions!
Harvey Davies
CSIRO Marine and Atmospheric Research