1NCRENAME(1) General Commands Manual NCRENAME(1)
2
6 ncrename - netCDF Renamer
7
9 ncrename [-a old_name,new_name] [-a ... ] [-D] [-d old_name,new_name]
10 [-d ... ] [-g old_name,new_name] [-g ... ] [--glb att_name= att_val]]
11 [-h] [--hdr_pad sz_byt] [-l path] [-O] [-p path] [-R] [-r] [--ram_all]
12 [-v old_name,new_name] [-v ... ] input-file [ output-file]
13
15 ncrename renames dimensions, variables, and attributes in a netCDF
16 file. Each object that has a name in the list of old names is renamed
17 using the corresponding name in the list of new names. All the new
18 names must be unique. Every old name must exist in the input file,
19 unless the name is preceded by the character .. The validity of the
20 old names is not checked prior to the renaming. Thus, if an old name
21 is specified without the the . prefix and is not present in input-
22 file, ncrename will abort.
23 ncrename is the exception to the normal rules that the user will be
25 interactively prompted before an existing file is changed, and that a
26 temporary copy of an output file is constructed during the operation.
27 If only input-file is specified, then ncrename will change the names of
28 the input-file in place without prompting and without creating a tempo‐
29 rary copy of input-file. This is because the renaming operation is
30 considered reversible if the user makes a mistake. The new_name can
31 easily be changed back to old_name by using ncrename one more time.
32 Note that renaming a dimension to the name of a dependent variable can
34 be used to invert the relationship between an independent coordinate
35 variable and a dependent variable. In this case, the named dependent
36 variable must be one-dimensional and should have no missing values.
37 Such a variable will become a coordinate variable.
38 According to the netCDF Users Guide, renaming properties in netCDF
40 files does not incur the penalty of recopying the entire file when the
41 new_name is shorter than the old_name.
42
44 -a old_name, new_name Attribute renaming. The old and new names of
45 the attribute are specified by the associated old_name and
46 new_name values. Global attributes are treated no differently
47 than variable attributes. This option may be specified more
48 than once. You cannot change the attribute name for one partic‐
49 ular variable (unless it is uniquely named); all occurrences of
50 the attribute of a given name will be renamed. This is consid‐
51 ered an oversight and will be addressed in a future version of
52 NCO.
53 -d old_name, new_name Dimension renaming. The old and new names of
55 the dimension are specified by the associated old_name and
56 new_name values. This option may be specified more than once.
57 -g old_name, new_name Group renaming. The old and new names of the
59 group are specified by the associated old_name and new_name val‐
60 ues. This option may be specified more than once.
61 -v old_name, new_name Variable renaming. The old and new names of
63 the variable are specified by the associated old_name and
64 new_name values. This option may be specified more than once.
65 -i Interactive. ncrename will prompt for confirmation before over‐
67 writing an existing file.
68
70 Rename the variable p to pressure and t to temperature in netCDF in.nc.
71 In this case p must exist in the input file (or ncrename will abort),
72 but the presence of t is optional:
73 ncrename -v p,pressure -v .t,temperature in.nc
74 ncrename does not automatically attach dimensions to variables of the
75 same name. If you want to rename a coordinate variable so that it
76 remains a coordinate variable, you must separately rename both the
77 dimension and the variable:
78 ncrename -d lon,longitude -v lon,longitude in.nc
79 Create netCDF out.nc identical to in.nc except the attribute _FillValue
81 is changed to missing_value (in all variables which possess it) and the
82 global attribute Zaire is changed to Congo:
83 ncrename -a _FillValue,missing_value -a Zaire,Congo in.nc out.nc
84
87 NCO manual pages written by Charlie Zender and originally formatted by
88 Brian Mays.
89
92 Report bugs to <http://sf.net/bugs/?group_id=3331>.
93
96 Copyright © 1995-2018 Charlie Zender
97 This is free software; see the source for copying conditions. There is
98 NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
99 PURPOSE.
100
103 The full documentation for NCO is maintained as a Texinfo manual called
104 the NCO Users Guide. Because NCO is mathematical in nature, the docu‐
105 mentation includes TeX-intensive portions not viewable on character-
106 based displays. Hence the only complete and authoritative versions of
107 the NCO Users Guide are the PDF (recommended), DVI, and Postscript ver‐
108 sions at <http://nco.sf.net/nco.pdf>, <http://nco.sf.net/nco.dvi>, and
109 <http://nco.sf.net/nco.ps>, respectively. HTML and XML versions are
110 available at <http://nco.sf.net/nco.html> and
111 <http://nco.sf.net/nco.xml>, respectively.
112 If the info and NCO programs are properly installed at your site, the
114 command
115 info nco
117 should give you access to the complete manual, except for the TeX-
119 intensive portions.
120 ncap(1), ncap2(1), ncatted(1), ncbo(1), ncclimo(1), nces(1), ncecat(1),
122 ncflint(1), ncks(1), nco(1), ncpdq(1), ncra(1), ncrcat(1), ncremap(1),
123 ncrename(1), ncwa(1)
124
127 The NCO homepage at <http://nco.sf.net> contains more information.
128 NCRENAME(1)