bibliometrix (version 1.9)

timeslice: Bibliographic data frame time slice

Description

Divide a bibliographic data frame into time slice

Usage

timeslice(M, breaks = NA, k = 5)

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 Reuters' ISI Web of Knowledge file.

breaks

is a numeric vector of two or more unique cut points.

k

is a integer value giving the number of intervals into which the data frame is to be cut. k is used only in case breaks argument is not provided. The default is k = 5.

Value

the value returned from split is a list containing the data frames for each sub-period.

See Also

convert2df to import and convert an ISI or SCOPUS Export file in a bibliographic data frame.

biblioAnalysis function for bibliometric analysis.

summary to obtain a summary of the results.

plot to draw some useful plots of the results.

Examples

# NOT RUN {
 
data(scientometrics)

list_df <- timeslice(scientometrics, breaks = c(1995, 2005))

names(list_df)

# }