NAME
ncpdq - netCDF Permute Dimensions Quickly, Pack Data Quietly...
SYNTAX
ncpdq [-3] [-4] [-6] [-A] [-a dim[,...]] [-C] [-c] [-D dbg] [-d dim,[
min][,[ max]]] [-F] [-h] [-L dfl_lvl] [-l path] [-M pck_map] [-O] [-o
output-file] [-P pck_plc] [-p path] [-R] [-r] [-t thr_nbr] [-v
var[,...]] [-X box] [-x] input-file [ output-file ]
DESCRIPTION
ncpdq packs or re-shapes variables in input-file and stores them in
output-file. Which variables to pack/unpack are determined by the
packing policy encoded in the pck_plc argument to the -P switch. Valid
pck_plc options are all_new, all_xst, xst_new, and upk. The numeric
type of variable to pack or re-pack a variable to is determined by the
packing map encoded in the pck_map argument to the -M switch. Valid
pck_map options are flt_byt, flt_sht, hgh_byt, hgh_sht, and nxt_lsr.
ncpdq re-shapes variables in input-file by re-ordering and/or reversing
dimensions specified in the dimension list. The dimension list is a
comma separated list of dimension names, optionally prefixed by
negative signs, that follow the -a switch. To re-order variables by a
subset of their dimensions, specify these dimensions in a comma-
separated list following -a, e.g., -a lon,lat. To reverse a dimension,
prefix its name with a negative sign in the dimension list, e.g., -a
-lat. Re-ordering and reversal may be performed simultaneously, e.g.,
-a lon,-lat,time,-lev.
Users may specify any permutation of dimensions, including permutations
which change the record dimension identity. The record dimension is
re-ordered like any other dimension. The record dimension is always
the most slowly varying dimension in a record variable. The specified
re-ordering will fail if it requires creating more than one record
dimension amongst all the output variables.
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 © 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 PARTICULAR
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.