1NCAP2(1)                    General Commands Manual                   NCAP2(1)
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NAME

6       ncap2 - netCDF Arithmetic Processor, Next Generation
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SYNTAX

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

15       ncap2 supercedes and is backwards-compatible with  ncap  which  is  now
16       deprecated.   Both  operators arithmetically process netCDF files.  The
17       primary  ncap2   documentation   is   currently   the   sample   script
18       <http://nco.sf.net/ncap2.in> The remainder of this manpage is identical
19       to the ncap manpage.
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21       The processing instructions are contained either in the NCO script file
22       fl.nco  or in a sequence of command line arguments.  The options -s (or
23       long options --spt or --script) are used for in-line scripts and -S (or
24       long  options  --fl_spt or --script-file) are used to provide the file‐
25       name where (usually multiple) scripting commands are pre-stored.  ncap2
26       was  written to perform arbitrary albebraic transformations of data and
27       archive the results as easily as possible.  Missing values are  treated
28       correctly.   The  results  of  the  algebraic  manipulations are called
29       derived fields.
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31       Unlike the other operators, ncap2 does not accept a list  of  variables
32       to be operated on as an argument to -v.  Rather, the -v switch takes no
33       arguments and indicates that  ncap2  should  output  only  user-defined
34       variables.  ncap2 does not accept or understand the -x switch.
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EXAMPLES

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

42       NCO manual pages written by Charlie Zender and Brian Mays.
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REPORTING BUGS

46       Report bugs to <http://sf.net/bugs/?group_id=3331>.
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50       Copyright © 1995-2010 Charlie Zender
51       This is free software; see the source for copying conditions.  There is
52       NO warranty; not even for MERCHANTABILITY or FITNESS FOR  A  PARTICULAR
53       PURPOSE.
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SEE ALSO

57       The full documentation for NCO is maintained as a Texinfo manual called
58       the NCO User's Guide.  Because NCO is mathematical in nature, the docu‐
59       mentation  includes  TeX-intensive  portions not viewable on character-
60       based displays.  Hence the only complete and authoritative versions  of
61       the  NCO  User's  Guide  are the PDF (recommended), DVI, and Postscript
62       versions at  <http://nco.sf.net/nco.pdf>,  <http://nco.sf.net/nco.dvi>,
63       and  <http://nco.sf.net/nco.ps>,  respectively.   HTML and XML versions
64       are      available      at       <http://nco.sf.net/nco.html>       and
65       <http://nco.sf.net/nco.xml>, respectively.
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67       If  the  info and NCO programs are properly installed at your site, the
68       command
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70              info nco
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72       should give you access to the complete  manual,  except  for  the  TeX-
73       intensive portions.
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HOMEPAGE

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