plot: Visualize a Term-Document Matrix

In tm: Text Mining Package

Description

Visualize correlations between terms of a term-document matrix.

Usage

## S3 method for class 'TermDocumentMatrix'
plot(x,
     terms = sample(Terms(x), 20),
     corThreshold = 0.7,
     weighting = FALSE,
     attrs = list(graph = list(rankdir = "BT"),
                  node = list(shape = "rectangle",
                              fixedsize = FALSE)),
     ...)

Arguments

x	A term-document matrix.
terms	Terms to be plotted. Defaults to 20 randomly chosen terms of the term-document matrix.
corThreshold	Do not plot correlations below this threshold. Defaults to 0.7.
weighting	Define whether the line width corresponds to the correlation.
attrs	Argument passed to the plot method for class graphNEL.
...	Other arguments passed to the graphNEL plot method.

Details

Visualization requires that package Rgraphviz is available.

Examples

## Not run: data(crude)
tdm <- TermDocumentMatrix(crude,
                          control = list(removePunctuation = TRUE,
                                         removeNumbers = TRUE,
                                         stopwords = TRUE))
plot(tdm, corThreshold = 0.2, weighting = TRUE)
## End(Not run)

tm documentation built on April 7, 2021, 3:01 a.m.