1NCPDQ(1) General Commands Manual NCPDQ(1)
2
6 ncpdq - netCDF Permute Dimensions Quickly, Pack Data Quietly...
7
9 ncpdq [-3] [-4] [-5] [-6] [-7] [-A] [-a dim[,...]] [--bfr
10 sz_byt][-C][-c][--cnk_byt sz_byt][--cnk_csh sz_byt][--cnk_dmn
11 nm,sz_lmn] [--cnk_map map] [--cnk_min sz_byt] [--cnk_plc plc]
12 [--cnk_scl sz_lmn][-D dbg_lvl] [-d dim,[ min][,[ max]]] [-F]
13 [--fl_fmt=fmt] [-G gpe_dsc] [-g grp[,...]] [--glb att_name= att_val]]
14 [-h] [--hdf] [--hdr_pad sz_byt][--hpss_try] [-L dfl_lvl] [-l path] [-M
15 pck_map] [--mrd] [--msa] [--no_cll_msr] [--no_frm_trm] [--no_tmp_fl]
16 [-O] [-o output-file] [-P pck_plc] [-p path] [--ppc var1[, var2[,...]]=
17 prc]] [-R] [-r] [--ram_all] [-t thr_nbr] [-U] [--uio] [--unn] [-v
18 var[,...]] [-X box] [-x] input-file [ output-file ]
19
21 ncpdq packs or re-shapes variables in input-file and stores them in
22 output-file. Which variables to pack/unpack are determined by the
23 packing policy encoded in the pck_plc argument to the -P switch. Valid
24 pck_plc options are all_new, all_xst, xst_new, and upk. The numeric
25 type of variable to pack or re-pack a variable to is determined by the
26 packing map encoded in the pck_map argument to the -M switch. Valid
27 pck_map options are flt_byt, flt_sht, hgh_byt, hgh_sht, and nxt_lsr.
28 ncpdq re-shapes variables in input-file by re-ordering and/or reversing
30 dimensions specified in the dimension list. The dimension list is a
31 comma separated list of dimension names, optionally prefixed by nega‐
32 tive signs, that follow the -a switch. To re-order variables by a sub‐
33 set of their dimensions, specify these dimensions in a comma-separated
34 list following -a, e.g., -a lon,lat. To reverse a dimension, prefix
35 its name with a negative sign in the dimension list, e.g., -a -lat.
36 Re-ordering and reversal may be performed simultaneously, e.g., -a
37 lon,-lat,time,-lev.
38 Users may specify any permutation of dimensions, including permutations
40 which change the record dimension identity. The record dimension is
41 re-ordered like any other dimension. The record dimension is always
42 the most slowly varying dimension in a record variable. The specified
43 re-ordering will fail if it requires creating more than one record di‐
44 mension amongst all the output variables.
45
48 NCO manual pages written by Charlie Zender and originally formatted by
49 Brian Mays.
50
53 Report bugs to <http://sf.net/bugs/?group_id=3331>.
54
57 Copyright © 1995-2018 Charlie Zender
58 This is free software; see the source for copying conditions. There is
59 NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
60 PURPOSE.
61
64 The full documentation for NCO is maintained as a Texinfo manual called
65 the NCO Users Guide. Because NCO is mathematical in nature, the docu‐
66 mentation includes TeX-intensive portions not viewable on character-
67 based displays. Hence the only complete and authoritative versions of
68 the NCO Users Guide are the PDF (recommended), DVI, and Postscript ver‐
69 sions at <http://nco.sf.net/nco.pdf>, <http://nco.sf.net/nco.dvi>, and
70 <http://nco.sf.net/nco.ps>, respectively. HTML and XML versions are
71 available at <http://nco.sf.net/nco.html> and
72 <http://nco.sf.net/nco.xml>, respectively.
73 If the info and NCO programs are properly installed at your site, the
75 command
76 info nco
78 should give you access to the complete manual, except for the TeX-in‐
80 tensive portions.
81 ncap(1), ncap2(1), ncatted(1), ncbo(1), ncclimo(1), nces(1), ncecat(1),
83 ncflint(1), ncks(1), nco(1), ncpdq(1), ncra(1), ncrcat(1), ncremap(1),
84 ncrename(1), ncwa(1)
85
88 The NCO homepage at <http://nco.sf.net> contains more information.
89 NCPDQ(1)