How to cite R and R packages in publications.
citation(package = "base", lib.loc = NULL, auto = NULL) readCitationFile(file, meta = NULL)
- a character string with the name of a single package. An error occurs if more than one package name is given.
- a character vector with path names of R libraries, or
NULL. The default value of
NULLcorresponds to all libraries currently known. If the default is used, the loaded packages are searched before the libraries.
- a logical indicating whether the default citation auto-generated from the package ‘DESCRIPTION’ metadata should be used or not, or
NULL(default), indicating that a ‘CITATION’ file is used if it exists, or an object of class
"packageDescription"with package metadata (see below).
- a file name.
- a list of package metadata as obtained by
The R core development team and the very active community of package authors have invested a lot of time and effort in creating R as it is today. Please give credit where credit is due and cite R and R packages when you use them for data analysis. Execute function
citation() for information on how to cite the base R system in publications. If the name of a non-base package is given, the function either returns the information contained in the ‘CITATION’ file of the package or auto-generates citation information. In the latter case the package ‘DESCRIPTION’ file is parsed, the resulting citation object may be arbitrarily bad, but is quite useful (at least as a starting point) in most cases.
In R >= 2.14.0, one can use a Authors@R field in ‘DESCRIPTION’ to provide (R code giving) a
person object with a refined, machine-readable description of the package “authors” (in particular specifying their precise roles). Only those with an author role will be included in the auto-generated citation.
If only one reference is given, the print method for the object returned by
citation() shows both a text version and a BibTeX entry for it, if a package has more than one reference then only the text versions are shown. The BibTeX versions can be obtained using function
toBibtex() (see the examples below).
The ‘CITATION’ file of an R package should be placed in the ‘inst’ subdirectory of the package source. The file is an R source file and may contain arbitrary R commands including conditionals and computations. Function
readCitationFile() is used by
citation() to extract the information in ‘CITATION’ files. The file is
source()ed by the R parser in a temporary environment and all resulting bibliographic objects (specifically, of class
"bibentry") are collected.
Traditionally, the ‘CITATION’ file contained zero or more calls to
citHeader, then one or more calls to
citEntry, and finally zero or more calls to
citFooter, where in fact
citFooter are simply wrappers to
paste, with their
... argument passed on to
paste as is. R 2.12.0 adds a new
"bibentry" class for improved representation and manipulation of bibliographic information (in fact, the old mechanism is implemented using the new one), and one can write ‘CITATION’ files using the unified
bibentry interface. Such files are not usable with versions of R prior to 2.12.0.
In R >= 2.14.0, one can include an auto-generated package citation in the ‘CITATION’ file via
citation(auto = meta).
An object inheriting from class
## the basic R reference citation() ## references for a package -- might not have these installed if(nchar(system.file(package = "lattice"))) citation("lattice") if(nchar(system.file(package = "foreign"))) citation("foreign") ## extract the bibtex entry from the return value x <- citation() toBibtex(x)
Documentation reproduced from R 2.15.3. License: GPL-2.