Learn R Programming

quanteda (version 4.1.0)

ntoken: Count the number of tokens or types

Description

Get the count of tokens (total features) or types (unique tokens).

Usage

ntoken(x, ...)

ntype(x, ...)

Value

ntoken() returns a named integer vector of the counts of the total tokens

ntypes() returns a named integer vector of the counts of the types (unique tokens) per document. For dfm objects, ntype() will only return the count of features that occur more than zero times in the dfm.

Arguments

x

a quanteda tokens or dfm object

...

additional arguments passed to tokens()

Examples

Run this code
# simple example
txt <- c(text1 = "This is a sentence, this.", text2 = "A word. Repeated repeated.")
toks <- tokens(txt)
ntoken(toks)
ntype(toks)
ntoken(tokens_tolower(toks))  # same
ntype(tokens_tolower(toks))   # fewer types

# with some real texts
toks <- tokens(corpus_subset(data_corpus_inaugural, Year < 1806))
ntoken(tokens(toks, remove_punct = TRUE))
ntype(tokens(toks, remove_punct = TRUE))
ntoken(dfm(toks))
ntype(dfm(toks))

Run the code above in your browser using DataLab