Hi,
As Martin points out, ncks -A fl_1.nc fl_2.nc puts the
contents of fl_1.nc into fl_2.nc. The -A is optional.
On output, fl_2.nc is the union of the input file variables,
regardless of whether they are disjoint.
This does not work if the input files have differently
named record dimensions (since netCDF supports only one),
or have differently sized dimensions of the same name.
The manual now clarifies that ncks defaults to append
mode when given two file arguments:
http://nco.sf.net/nco.html#apn
Thanks,
Charlie
zender@elnino:~/nco/data$ ncks -O -v lon in.nc fl_1.nc
zender@elnino:~/nco/data$ ncks -O -v lat in.nc fl_2.nc
zender@elnino:~/nco/data$ ncks -A fl_1.nc fl_2.nc
ncks: WARNING Overwriting global attribute Conventions
ncks: WARNING Overwriting global attribute history
ncks: WARNING Overwriting global attribute julian_day
ncks: WARNING Overwriting global attribute RCS_Header
zender@elnino:~/nco/data$ ncks -H fl_2.nc
lat[0]=-90
lat[1]=90
lon[0]=0
lon[1]=90
lon[2]=180
lon[3]=270
zender@elnino:~/nco/data$
--
Charlie Zender, zender at uci dot edu, (949) 824-2987, Department of
Earth System Science, University of California, Irvine CA 92697-3100
