1NCPDQ(1) General Commands Manual NCPDQ(1)
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6 ncpdq - netCDF Permute Dimensions Quickly, Pack Data Quietly...
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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 ]
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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.
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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-present 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)