[netcdfgroup] changing from fixed to unlimited dimensions in place

I'm guessing this is not possible but I thought I would ask just in case there is something I missed. Is it possible to change a dimension from a fixed length dimension to a record or unlimited dimension in place without having to rewrite the entire file. In my case I have a bunch of 2D (lat, lon) or 3D (lon,lat,lev) plus time netcdf 4 files where time is the last dimension (1 time per file) that I want to concatenate with the nco utility. The files were created with time a fixed dimension of length one and are large and nco seems to be making a copy of the whole file when converting the time to an unlimited dimension. Looking at the API it doesn't seem it can be done without making a new file.

--
Ben Auer, PhD   SSAI, Scientific Programmer/Analyst
NASA GSFC,  Global Modeling and Assimilation Office
Code 610.1, 8800 Greenbelt Rd, Greenbelt, MD  20771
Phone: 301-286-9176               Fax: 301-614-6246



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