NCECAT(1)						      General Commands Manual							 NCECAT(1)

NAME

       ncecat - netCDF Ensemble Concatenator

SYNTAX

       ncecat  [-3] [-4] [-6] [-A] [-C] [-c] [-D dbg] [-d dim,[ min][,[ max]]] [-F] [-h] [-L dfl_lvl] [-l path] [-M] [-n loop] [-O] [-p path] [-R]
       [-r] [-t thr_nbr] [-u ulm_nm] [-v var[,...]]  [-X box] [-x] input-files output-file

DESCRIPTION

       ncecat concatenates an arbitrary number of input files into a single output file.  Input files are glued  together  by  creating  a  record
       dimension in the output file.  Input files must be the same size.  Each input file is stored consecutively as a single record in the output
       file.  Each variable (except coordinate variables) in each input file becomes one record in the same variable in the output file.   Coordi-
       nate  variables	are  not concatenated, they are instead simply copied from the first input file to the output-file.  Thus, the size of the
       output file is the sum of the sizes of the input files.

       Consider five realizations, 85a.nc, 85b.nc,...  85e.nc of 1985 predictions from the same climate model.	Then ncecat 85?.nc 85_ens.nc glues
       the  individual	realizations  together	into  the  single file, 85_ens.nc.  If an input variable was dimensioned [ lat, lon], it will have
       dimensions [ record, lat, lon] in the output file.  A restriction of ncecat is that the hyperslabs of the processed variables must  be  the
       same  from file to file.  Normally this means all the input files are the same size, and contain data on different realizations of the same
       variables.

EXAMPLES

       Consider a model experiment which generated five realizations of one year of data,  say	1985.	You  can  imagine  that  the  experimenter
       slightly  perturbs  the initial conditions of the problem before generating each new solution.  Assume each file contains all twelve months
       (a seasonal cycle) of data and we want to produce a single file containing all the seasonal  cycles.   Here  the  numeric  filename  suffix
       denotes the experiment number (not the month):
	      ncecat 85_01.nc 85_02.nc 85_03.nc 85_04.nc 85_05.nc 85.nc
	      ncecat 85_0[1-5].nc 85.nc
	      ncecat -n 5,2,1 85_01.nc 85.nc
       These  three  commands  produce	identical answers.  The output file, 85.nc, is five times the size as a single input-file.  It contains 60
       months of data (which might or might not be stored in the record dimension, depending on the input files).

AUTHOR

       NCO manual pages written by Charlie Zender and Brian Mays.

REPORTING BUGS

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

COPYRIGHT

       Copyright (C) 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 PARTICU-
       LAR 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.

																	 NCECAT(1)