R: Remove/Replace/Extract Abbreviations

rm_abbreviation {qdapRegex}

R Documentation

Remove/Replace/Extract Abbreviations

Description

Remove/replace/extract abbreviations from a string containing lower case or capital letters followed by a period and then an optional space (this must be repeated 2 or more times).

Usage

rm_abbreviation(text.var, trim = !extract, clean = TRUE,
  pattern = "@rm_abbreviation", replacement = "", extract = FALSE,
  dictionary = getOption("regex.library"), ...)

ex_abbreviation(text.var, trim = !extract, clean = TRUE,
  pattern = "@rm_abbreviation", replacement = "", extract = TRUE,
  dictionary = getOption("regex.library"), ...)

Arguments

`text.var`	The text variable.
`trim`	logical. If `TRUE` removes leading and trailing white spaces.
`clean`	trim logical. If `TRUE` extra white spaces and escaped character will be removed.
`pattern`	A character string containing a regular expression (or character string for `fixed = TRUE`) to be matched in the given character vector. Default, `@rm_abbreviation` uses the `rm_abbreviation` regex from the regular expression dictionary from the `dictionary` argument.
`replacement`	Replacement for matched `pattern`.
`extract`	logical. If `TRUE` the abbreviations are extracted into a list of vectors.
`dictionary`	A dictionary of canned regular expressions to search within if `pattern` begins with `"@rm_"`.
`...`	Other arguments passed to `gsub`.

Value

Returns a character string with abbreviations removed.

Examples

x <- c("I want $2.33 at 2:30 p.m. to go to A.n.p.",
    "She will send it A.S.A.P. (e.g. as soon as you can) said I.",
    "Hello world.", "In the U. S. A.")
rm_abbreviation(x)
ex_abbreviation(x)