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Jeff et al., I want this functionality too. I thought it might be easy to do by emulating the existing rename functions for vars and dimensions. Unfortunately, I never managed to get my patch to work. Maybe somebody will see what I did wrong: http://dust.ess.uci.edu/tmp/nc_rename_grp.tar.gz In the meantime, I use NCO GPE to rename groups. This "renames" the hard way, by writing to a new file rather than by relinking internal data structures in an existing file. ncks -O -G f4:1 -g g4 ~/nco/data/in_grp.nc ~/tmp.nc # Move /g4 to /f4 ncks -O -x -g g4 ~/nco/data/in_grp.nc ~/out.nc # Excise /g4 ncks -A ~/tmp.nc ~/out.nc # Add /f4 to new file Awkward? Yes. Three steps instead of an easy ncrename. See http://nco.sf.net/nco.html#gpe for more details. c -- Charlie Zender, Earth System Sci. & Computer Sci. University of California, Irvine 949-891-2429 )'(
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