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NCO(1) | General Commands Manual | NCO(1) |
NAME¶
NCO - netCDF OperatorsSYNTAX¶
operator [ options] input-files output-fileDESCRIPTION¶
The netCDF Operators, or NCO are a suite of programs known as operators. Each operator is a standalone, command line program which is executed at the UNIX shell-level like, e.g., ls or mkdir. The operators take netCDF (<http://www.unidata.ucar.edu/packages/netcdf>) files as input, then perform a set of operations (e.g., deriving new data, averaging, hyperslabbing, or metadata manipulation) and produce a netCDF file as output. The operators are primarily designed to aid manipulation and analysis of gridded scientific data. The single command style of NCO allows users to manipulate and analyze files interactively and with simple scripts, avoiding the overhead (and some of the power) of a higher level programming environment. The NCO User's Guide illustrates their use with examples from the field of climate modeling and analysis. The available operators are:ncap2, netCDF Arithmetic Processor
ncatted, netCDF Attribute Editor
ncbo, netCDF Binary Operator (includes
ncadd, ncsubtract, ncmultiply, ncdivide)
nces, netCDF Ensemble Averager
ncecat, netCDF Ensemble Concatenator
ncflint, netCDF File Interpolator
ncks, netCDF Kitchen Sink
ncpdq, netCDF Permute Dimensions Quickly, Pack
Data Quietly
ncra, netCDF Record Averager
ncrcat, netCDF Record Concatenator
ncrename, netCDF Renamer
ncwa, netCDF Weighted Averager.
(Note that the "averagers" are misnamed because they perform many
non-linear operations as well, e.g., total, minimum, maximum, RMS).
The operators are as general as netCDF itself: there are no restrictions on the
contents of the netCDF file(s) used as input. NCO's internal routines
are completely dynamic and impose no limit on the number or sizes of
dimensions, variables, and files. NCO is designed to be used both
interactively and with large batch jobs. The default operator behavior is
often sufficient for everyday needs, and there are numerous command line
(i.e., run-time) options, for special cases. NCO works well on all
modern operating systems.
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 ZenderSEE 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