Extract, slicing and thinning a GPhys variable.
% gpcut [options] path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]]
-h, --help : print this message. -m dim, --mean dim : average along dim axis (optional). -o file, --output file : output filename (optional). : Default output filename is 'gphys.nc'.
2005/05/17 S Takehiro (created) 2005/07/15 S Takehiro (open_gturl method is used for opening gphys variable)