R: Plot a commonality cloud

commonality.cloud {wordcloud} | R Documentation

## Plot a commonality cloud

### Description

Plot a cloud of words shared across 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.
`comonality.measure` | A function taking a vector of frequencies for a single term, and returning a common frequency
`max.words` | Maximum number of words to be plotted. least frequent terms dropped
`...` | Additional parameters to be passed to wordcloud.

### Value

nothing

### 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)
    }

[Package wordcloud version 2.6 Index]