Vizualize lexical dispersion plot

viz_dispersion(data, var, group, words = 10, symbol = NULL, alpha = 0.7)

Arguments

data	A data.frame.
var	variable that contains the words to be visualized.
group	If present with show a group for each line with the words color coded.
words	Numerical or character. If numerical it will display the n most common words. If character will show the location of said strings.
symbol	The word symbol. Default to is 18 (filed diamond) when number of points are less then 200 and to 108 (vertical line) when there are more then 200 points.
alpha	color transperency of the word symbols.

Value

ggplot2 object.

Examples

if (FALSE) {
library(tidytext)

text_data <- unnest_tokens(fairy_tales, word, text)
viz_dispersion(text_data, word)
viz_dispersion(text_data, word, words = c("branches", "not a word"))
viz_dispersion(text_data, word, symbol = "2")
viz_dispersion(text_data, word, group = book)
}