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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
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