bibliometrix (version 0.3)

citations: Citation frequency distribution

Description

It calculates frequency distribution of citations.

Usage

citations(M, field = "article", sep = ";")

Arguments

M

is a bibliographic data frame obtained by the converting function convert2df. It is a data matrix with cases corresponding to manuscripts and variables to Field Tag in the original SCOPUS and Thomson Re

field

is a character. It can be "article" or "author" to obtain frequency distribution of cited citations or cited first authors respectively. The default is field = "article".

sep

is the field separator character. This character separates citations in each string of CR column of the bibiographic data frame. The default is sep = ";".

Value

• an object of class "table".

See Also

biblioAnalysis function for bibliometric analysis. summary to obtain a summary of the results. plot to draw some useful plots of the results.

Examples

## EXAMPLE 1: Cited articles

data(scientometrics)

CR <- citations(scientometrics, field = "article", sep = ";")

CR[1:10]

## EXAMPLE 2: Cited first authors

data(scientometrics)

CR <- citations(scientometrics, field = "author", sep = ";")

CR[1:10]