NAME

       ncrcat - netCDF Record Concatenator

SYNTAX

       ncrcat  [-3]  [-4]  [-6]  [-7]  [-A]  [--bfr  sz][-C][-c][--cnk_byt  sz][--cnk_dmn nm,sz] [--cnk_map map]
       [--cnk_plc plc] [--cnk_scl sz][-D dbg_lvl] [-d dim,[ min][,[ max]][,[ stride[[,[ subcycle]]]]]  [-F]  [-G
       gpe_dsc]  [-g  grp[,...]]   [-h]  [--hdr_pad  sz]  [-L  dfl_lvl]  [-l  path]  [--mro]  [--msa]  [-n loop]
       [--no_tmp_fl] [-O] [-p path] [-R] [-r] [--ram_all] [--rec_apn] [-t thr_nbr] [--unn] [-v  var[,...]]   [-X
       box] [-x] input-files output-file

DESCRIPTION

       ncrcat  concatenates  record  variables  across  an  arbitrary  number  of input files.  The final record
       dimension is by default the sum of the lengths of the record dimensions in the input files.

       Input files may vary in size, but each must have a record dimension.   The  record  coordinate,  if  any,
       should  be  monotonic  (or else non-fatal warnings may be generated).  Hyperslabs of the record dimension
       which include more than one file are handled correctly.  ncra supports the  stride  argument  to  the  -d
       hyperslab option for the record dimension only, stride is not supported for non-record dimensions.

       ncrcat applies special rules to ARM convention time fields (e.g., time_offset).

EXAMPLES

       Concatenate files 85.nc, 86.nc,  ...  89.nc along the record dimension, and store the results in 8589.nc:
              ncrcat 85.nc 86.nc 87.nc 88.nc 89.nc 8589.nc
              ncrcat 8[56789].nc 8589.nc
              ncrcat -n 5,2,1 85.nc 8589.nc
       These three methods produce identical answers.

       Assume  the  files  85.nc,  86.nc,  ...  89.nc each contain a record coordinate time of length 12 defined
       such that the third record in 86.nc contains data from March 1986, etc.  NCO knows how to  hyperslab  the
       record dimension across files.  Thus, to concatenate data from December, 1985--February, 1986:
              ncrcat -d time,11,13 85.nc 86.nc 87.nc 8512_8602.nc
              ncrcat -F -d time,12,14 85.nc 86.nc 87.nc 8512_8602.nc
       The  file  87.nc  is  superfluous,  but  does  not cause an error.  The -F turns on the Fortran (1-based)
       indexing convention.

       The following uses the stride option to concatenate all the March temperature data  from  multiple  input
       files into a single output file
              ncrcat -F -d time,3,,12 -v temperature 85.nc 86.nc 87.nc 858687_03.nc

       Assume the time coordinate is incrementally numbered such that January, 1985 = 1 and December, 1989 = 60.
       Assuming ??  only expands to the five desired files, the following concatenates June, 1985--June, 1989:
              ncrcat -d time,6.,54. ??.nc 8506_8906.nc

AUTHOR

       NCO manual pages written by Charlie Zender and originally formatted by Brian Mays.

REPORTING BUGS

       Report bugs to <http://sf.net/bugs/?group_id=3331>.

COPYRIGHT

       Copyright © 1995-2010 Charlie Zender
       This  is  free  software;  see  the  source  for  copying conditions.  There is NO warranty; not even for
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

       The full documentation for NCO is maintained as a Texinfo manual called the NCO  User's  Guide.   Because
       NCO  is  mathematical  in  nature,  the  documentation  includes  TeX-intensive  portions not viewable on
       character-based displays.  Hence the only complete and authoritative versions of the NCO User's Guide are
       the   PDF   (recommended),    DVI,    and    Postscript    versions    at    <http://nco.sf.net/nco.pdf>,
       <http://nco.sf.net/nco.dvi>,  and  <http://nco.sf.net/nco.ps>,  respectively.   HTML and XML versions are
       available at <http://nco.sf.net/nco.html> and <http://nco.sf.net/nco.xml>, respectively.

       If the info and NCO programs are properly installed at your site, the command

              info nco

       should give you access to the complete manual, except for the TeX-intensive portions.

HOMEPAGE

       The NCO homepage at <http://nco.sf.net> contains more information.

                                                                                                       NCRCAT(1)