JSTOR_1bigram: Plot the frequency of one bigram over time in a JSTOR DfR...

In benmarwick/JSTORr: Simple Text Mining and Document Clustering of JSTOR Journal Articles

Description

Function to plot changes in the relative frequency of a bigram over time. The relative frequency is the frequency of the bigram in a document divided by the total number of bigrams in a document. For use with JSTOR's Data for Research datasets (http://dfr.jstor.org/).

Usage

JSTOR_1bigram(unpack2grams, bigram, span = 0.4)

Arguments

unpack2grams	object returned by the function JSTOR_unpack2grams.
bigram	two words, surrounded by standard quote marks, or a vector of bigrams.
span	span of the lowess line (controls the degree of smoothing). Default is 0.4

Value

Returns a ggplot object with publication year on the horizontal axis and log relative frequency on the vertical axis. Each point represents a single document.

Examples

## JSTOR_1bigram(unpack2grams, "pirate booty")
## JSTOR_1bigram(unpack2grams, c("treasure chest", "musket balls", "jolly roger"), span = 0.7)

benmarwick/JSTORr documentation built on May 12, 2019, 12:59 p.m.