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ncrename - Online in the Cloud

Run ncrename in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command ncrename that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


ncrename - netCDF Renamer

SYNTAX


ncrename [-a old_name,new_name] [-a ... ] [-D] [-d old_name,new_name] [-d ... ] [-g
old_name,new_name] [-g ... ] [--glb att_name= att_val]] [-h] [--hdr_pad sz] [-l path]
[-O] [-p path] [-R] [-r] [--ram_all] [-v old_name,new_name] [-v ... ] input-file [
output-file]

DESCRIPTION


ncrename renames dimensions, variables, and attributes in a netCDF file. Each object that
has a name in the list of old names is renamed using the corresponding name in the list of
new names. All the new names must be unique. Every old name must exist in the input
file, unless the name is preceded by the character .. The validity of the old names is
not checked prior to the renaming. Thus, if an old name is specified without the the .
prefix and is not present in input-file, ncrename will abort.

ncrename is the exception to the normal rules that the user will be interactively prompted
before an existing file is changed, and that a temporary copy of an output file is
constructed during the operation. If only input-file is specified, then ncrename will
change the names of the input-file in place without prompting and without creating a
temporary copy of input-file. This is because the renaming operation is considered
reversible if the user makes a mistake. The new_name can easily be changed back to
old_name by using ncrename one more time.

Note that renaming a dimension to the name of a dependent variable can be used to invert
the relationship between an independent coordinate variable and a dependent variable. In
this case, the named dependent variable must be one-dimensional and should have no missing
values. Such a variable will become a coordinate variable.

According to the netCDF User's Guide, renaming properties in netCDF files does not incur
the penalty of recopying the entire file when the new_name is shorter than the old_name.

OPTIONS


-a old_name, new_name Attribute renaming. The old and new names of the attribute are
specified by the associated old_name and new_name values. Global attributes are
treated no differently than variable attributes. This option may be specified more
than once. You cannot change the attribute name for one particular variable
(unless it is uniquely named); all occurrences of the attribute of a given name
will be renamed. This is considered an oversight and will be addressed in a future
version of NCO.

-d old_name, new_name Dimension renaming. The old and new names of the dimension are
specified by the associated old_name and new_name values. This option may be
specified more than once.

-g old_name, new_name Group renaming. The old and new names of the group are
specified by the associated old_name and new_name values. This option may be
specified more than once.

-v old_name, new_name Variable renaming. The old and new names of the variable are
specified by the associated old_name and new_name values. This option may be
specified more than once.

-i Interactive. ncrename will prompt for confirmation before overwriting an existing
file.

EXAMPLES


Rename the variable p to pressure and t to temperature in netCDF in.nc. In this case p
must exist in the input file (or ncrename will abort), but the presence of t is optional:
ncrename -v p,pressure -v .t,temperature in.nc
ncrename does not automatically attach dimensions to variables of the same name. If you
want to rename a coordinate variable so that it remains a coordinate variable, you must
separately rename both the dimension and the variable:
ncrename -d lon,longitude -v lon,longitude in.nc

Create netCDF out.nc identical to in.nc except the attribute _FillValue is changed to
missing_value (in all variables which possess it) and the global attribute Zaire is
changed to Congo:
ncrename -a _FillValue,missing_value -a Zaire,Congo in.nc out.nc

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