NCAP2(1)						      General Commands Manual							  NCAP2(1)

NAME

       ncap2 - netCDF Arithmetic Processor, Next Generation

SYNTAX

       ncap2  [-3]  [-4]  [-6] [-A] [-C] [-c] [-D dbg] [-d dim,[ min][,[ max]]] [-F] [-f] [-h] [-l path] [-O] [-o output-file] [-p path] [-R] [-r]
       [-S script-file][-s script][-t thr_nbr][-v var[,...]]  input-file [ output-file ]

DESCRIPTION

       ncap2 supercedes and is backwards-compatible with ncap which is now deprecated.	Both operators arithmetically process netCDF  files.   The
       primary	ncap2  documentation is currently the sample script <http://nco.sf.net/ncap2.in> The remainder of this manpage is identical to the
       ncap manpage.

       The processing instructions are contained either in the NCO script file fl.nco or in a sequence of command line arguments.  The options	-s
       (or long options --spt or --script) are used for in-line scripts and -S (or long options --fl_spt or --script-file) are used to provide the
       filename where (usually multiple) scripting commands are pre-stored.  ncap2 was written to perform arbitrary albebraic  transformations	of
       data  and archive the results as easily as possible.  Missing values are treated correctly.  The results of the algebraic manipulations are
       called derived fields.

       Unlike the other operators, ncap2 does not accept a list of variables to be operated on as an argument to -v.  Rather, the -v switch  takes
       no arguments and indicates that ncap2 should output only user-defined variables.  ncap2 does not accept or understand the -x switch.

EXAMPLES

       Compute the square of variable T
	      ncap2 -s "T2=T*T" in.nc out.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.

																	  NCAP2(1)