1NCECAT(1)                   General Commands Manual                  NCECAT(1)
2
3
4

NAME

6       ncecat - netCDF Ensemble Concatenator
7

SYNTAX

9       ncecat  [-A]  [-C] [-c] [-D dbg] [-d dim,[ min][,[ max]]] [-F] [-h] [-l
10       path] [-n loop] [-O] [-p path] [-R] [-r] [-v  var[,...]]   [-x]  input-
11       files output-file
12

DESCRIPTION

14       ncecat  concatenates  an  arbitrary number of input files into a single
15       output file.  Input files are  glued  together  by  creating  a  record
16       dimension in the output file.  Input files must be the same size.  Each
17       input file is stored consecutively as a single  record  in  the  output
18       file.  Thus, the size of the output file is the sum of the sizes of the
19       input files.
20
21       Consider five realizations, 85a.nc, 85b.nc, 85e.nc of 1985  predictions
22       from  the  same  climate model.  Then ncecat 85?.nc 85_ens.nc glues the
23       individual realizations together into the single file,  85_ens.nc.   If
24       an  input variable was dimensioned [ lat, lon], it will have dimensions
25       [ record, lat, lon] in the output file.  A  restriction  of  ncecat  is
26       that  the  hyperslabs  of the processed variables must be the same from
27       file to file.  Normally this means all the input  files  are  the  same
28       size, and contain data on different realizations of the same variables.
29

EXAMPLES

31       Consider  a  model  experiment which generated five realizations of one
32       year of data, say 1985.  You can imagine that the experimenter slightly
33       perturbs  the  initial conditions of the problem before generating each
34       new solution.  Assume each file contains all twelve months (a  seasonal
35       cycle)  of data and we want to produce a single file containing all the
36       seasonal cycles.  Here the numeric filename suffix denotes the  experi‐
37       ment number (not the month):
38              ncecat 85_01.nc 85_02.nc 85_03.nc 85_04.nc 85_05.nc 85.nc
39              ncecat 85_0[1-5].nc 85.nc
40              ncecat -n 5,2,1 85_01.nc 85.nc
41       These  three  commands  produce  identical  answers.   The output file,
42       85.nc, is five times the size as a single input-file.  It  contains  60
43       months of data (which might or might not be stored in the record dimen‐
44       sion, depending on the input files).
45
46

AUTHOR

48       NCO manual pages written by Charlie Zender and Brian Mays.
49
50

REPORTING BUGS

52       Report bugs to <http://sf.net/bugs/?group_id=3331>.
53
54

56       Copyright © 1995-2004 Charlie Zender
57       This is free software; see the source for copying conditions.  There is
58       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
59       PURPOSE.
60
61

SEE ALSO

63       The full documentation for NCO is maintained as a Texinfo manual called
64       the NCO User's Guide.  Because NCO is mathematical in nature, the docu‐
65       mentation includes TeX-intensive portions not  viewable  on  character-
66       based  displays.  Hence the only complete and authoritative versions of
67       the NCO User's Guide are the PDF  (recommended),  DVI,  and  Postscript
68       versions  at  <http://nco.sf.net/nco.pdf>, <http://nco.sf.net/nco.dvi>,
69       and <http://nco.sf.net/nco.ps>, respectively.  HTML  and  XML  versions
70       are       available       at      <http://nco.sf.net/nco.html>      and
71       <http://nco.sf.net/nco.xml>, respectively.
72
73       If the info and NCO programs are properly installed at your  site,  the
74       command
75
76              info nco
77
78       should  give  you  access  to  the complete manual, except for the TeX-
79       intensive portions.
80
81

HOMEPAGE

83       The NCO homepage at <http://nco.sf.net> contains more information.
84
85
86
87                                                                     NCECAT(1)
Impressum