commonality.cloud: A word cloud showing the common words among documents

In srvanderplas/nppd: Functions for Analysis at Nebraska Public Power District

Description

A word cloud showing the common words among documents

Usage

commonality.cloud(term.matrix, comonality.measure = min, max.words = 300,
  ...)

Arguments

term.matrix	A term frequency matrix whose rows represent words and whose columns represent documents.
max.words	Maximum number of words to be plotted. least frequent terms dropped
...	Additional parameters to be passed to wordcloud.
commonality.measure	A function taking a vector of frequencies for a single term, and returning a common frequency

Examples

if (require(tm)) {
  data(SOTU)
  corp <- SOTU
  corp <- tm_map(corp, removePunctuation)
  corp <- tm_map(corp, content_transformer(tolower))
  corp <- tm_map(corp, removeNumbers)
  corp <- tm_map(corp, function(x)removeWords(x, stopwords()))

  term.matrix <- TermDocumentMatrix(corp)
  term.matrix <- as.matrix(term.matrix)
  colnames(term.matrix) <- c("SOTU 2010", "SOTU 2011")
  comparison.cloud(term.matrix, max.words = 40, random.order = FALSE)
  commonality.cloud(term.matrix, max.words = 40, random.order = FALSE)
}

srvanderplas/nppd documentation built on May 30, 2019, 8:42 a.m.