plot: Visualize a Term-Document Matrix
Description
Visualize correlations between terms of a term-document matrix.
Usage
"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
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)