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tokens_tolower

Convert the case of tokens

Description

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

Usage

tokens_tolower(x, keep_acronyms = FALSE)

tokens_toupper(x)

Arguments

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)

Examples

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

Quantitative Analysis of Textual Data

v3.0.0
GPL-3
Authors
Kenneth Benoit [cre, aut, cph] (<https://orcid.org/0000-0002-0797-564X>), Kohei Watanabe [aut] (<https://orcid.org/0000-0001-6519-5265>), Haiyan Wang [aut] (<https://orcid.org/0000-0003-4992-4311>), Paul Nulty [aut] (<https://orcid.org/0000-0002-7214-4666>), Adam Obeng [aut] (<https://orcid.org/0000-0002-2906-4775>), Stefan Müller [aut] (<https://orcid.org/0000-0002-6315-4125>), Akitaka Matsuo [aut] (<https://orcid.org/0000-0002-3323-6330>), William Lowe [aut] (<https://orcid.org/0000-0002-1549-6163>), Christian Müller [ctb], European Research Council [fnd] (ERC-2011-StG 283794-QUANTESS)
Initial release

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