qdap (version 2.3.0)

bag_o_words: Bag of Words

Description

bag_o_words - Reduces a text column to a bag of words.

unbag - Wrapper for paste(collapse=" ") to glue words back into strings.

breaker - Reduces a text column to a bag of words and qdap recognized end marks.

word_split - Reduces a text column to a list of vectors of bag of words and qdap recognized end marks (i.e., ".", "!", "?", "*", "-").

Usage

bag_o_words(text.var, apostrophe.remove = FALSE, ...)
unbag(text.var, na.rm = TRUE)
breaker(text.var)
word_split(text.var)

Arguments

text.var

The text variable.

apostrophe.remove

logical. If TRUE removes apostrophe's from the output.

na.rm

logical. If TRUE NAs are removed before pasting.

…

Additional arguments passed to strip.

Value

Returns a vector of stripped words.

unbag - Returns a string.

breaker - Returns a vector of striped words and qdap recognized endmarks (i.e., ".", "!", "?", "*", "-").

Examples

# NOT RUN {
bag_o_words("I'm going home!")
bag_o_words("I'm going home!", apostrophe.remove = TRUE)
unbag(bag_o_words("I'm going home!"))

bag_o_words(DATA$state)
by(DATA$state, DATA$person, bag_o_words)
lapply(DATA$state,  bag_o_words)

breaker(DATA$state)
by(DATA$state, DATA$person, breaker)
lapply(DATA$state,  breaker)
unbag(breaker(DATA$state))

word_split(c(NA, DATA$state))
unbag(word_split(c(NA, DATA$state)))
# }