quanteda (version 0.99)

ndoc: count the number of documents or features

Description

Get the number of documents or features in an object.

Usage

ndoc(x)
nfeature(x)

Arguments

x

a quanteda object: a corpus, dfm, or tokens object, or a readtext object from the readtext package.

Value

an integer (count) of the number of documents or features

Details

ndoc returns the number of documents in a corpus, dfm, or tokens object, or a readtext object from the readtext package

nfeature returns the number of features in a dfm

nfeature returns the number of features from a dfm; it is an alias for ntype when applied to dfm objects. This function is only defined for dfm objects because only these have "features". (To count tokens, see ntoken.)

See Also

ntoken

Examples

# NOT RUN {
# number of documents
ndoc(data_corpus_inaugural)
ndoc(corpus_subset(data_corpus_inaugural, Year > 1980))
ndoc(tokens(data_corpus_inaugural))
ndoc(dfm(corpus_subset(data_corpus_inaugural, Year > 1980)))

# number of features
nfeature(dfm(corpus_subset(data_corpus_inaugural, Year > 1980), remove_punct = FALSE))
nfeature(dfm(corpus_subset(data_corpus_inaugural, Year > 1980), remove_punct = TRUE))
# }