tokens_tolower: Convert the case of tokens
In koheiw/quanteda.core: Quantitative Analysis of Textual Data

tokens_tolower() and tokens_toupper() convert the features of a tokens object and re-index the types.

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tokens_tolower(x, keep_acronyms = FALSE)

tokens_toupper(x)

`x`	the input object whose character/tokens/feature elements will be case-converted
`keep_acronyms`	logical; if `TRUE`, do not lowercase any all-uppercase words (applies only to `*_tolower()` functions)

# for a document-feature matrix
toks <- tokens(c(txt1 = "b A A", txt2 = "C C a b B"))
tokens_tolower(toks)
tokens_toupper(toks)

koheiw/quanteda.core documentation built on Sept. 21, 2020, 3:44 p.m.

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