NCRCAT(1)						      General Commands Manual							 NCRCAT(1)

NAME

       ncrcat - netCDF Record Concatenator

SYNTAX

       ncrcat  [-3]  [-4]  [-6]  [-A]  [-C] [-c] [-D dbg] [-d dim,[ min][,[ max]][,[ stride]]] [-F] [-h] [-L dfl_lvl] [-l path] [-n loop] [-O] [-p
       path] [-R] [-r] [-t thr_nbr] [-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  Decem-
       ber, 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 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.

																	 NCRCAT(1)