pack: Pack data

In rcdo: Wrapper of 'CDO' Operators

Pack data

Description

Packing reduces the data volume by reducing the precision of the stored numbers. It is implemented using the NetCDF attributes add_offset and scale_factor. The operator pack calculates the attributes add_offset and scale_factor for all variables. The default data type for all variables is automatically changed to 16-bit integer. Use the CDO option -b to change the data type to a different integer precision, if needed. Missing values are automatically transformed to the current data type. Alternatively, the pack parameters add_offset and scale_factor can be read from a file for each variable.

Usage

cdo_pack(ifile, printparam = NULL, filename = NULL, ofile = NULL)

Arguments

ifile	String with the path to the input file.
printparam	BOOL - Print pack parameters to stdout for each variable
filename	STRING - Read pack parameters from file for each variable[format: name=<> add_offset=<> scale_factor=<>]
ofile	String with the path to the output file.

Value

Operators that output one or more files return a character vector to the output files.

Operators that output an indefinite number of files return a string with the basename of the files.

Operatos that don't return filenames return a character vector with the string output.

rcdo documentation built on June 8, 2025, 12:36 p.m.