qdapRegex (version 0.7.5)

rm_non_words: Remove/Replace/Extract Non-Words

Description

rm_non_words - Remove/replace/extract non-words (Anything that's not a letter or apostrophe; also removes multiple white spaces) from a string.

Usage

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

ex_non_words( text.var, trim = !extract, clean = TRUE, pattern = "[^A-Za-z' ]+", 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_non_words uses the rm_non_words regex from the regular expression dictionary from the dictionary argument.

replacement

Replacement for matched pattern (Note: default is " ", whereas most qdapRegex functions replace with "").

extract

logical. If TRUE the non-words 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 non-words removed.

See Also

gsub, stri_extract_all_regex

Other rm_ functions: rm_abbreviation(), rm_between(), rm_bracket(), rm_caps_phrase(), rm_caps(), rm_citation_tex(), rm_citation(), rm_city_state_zip(), rm_city_state(), rm_date(), rm_default(), rm_dollar(), rm_email(), rm_emoticon(), rm_endmark(), rm_hash(), rm_nchar_words(), rm_non_ascii(), rm_number(), rm_percent(), rm_phone(), rm_postal_code(), rm_repeated_characters(), rm_repeated_phrases(), rm_repeated_words(), rm_tag(), rm_time(), rm_title_name(), rm_url(), rm_white(), rm_zip()

Examples

Run this code
# NOT RUN {
x <- c(
    "I like 56 dogs!",
    "It's seventy-two feet from the px290.",
    NA,
    "What",
    "that1is2a3way4to5go6.",
    "What do you*% want?  For real%; I think you'll see.",
    "Oh some <html>code</html> to remove"
)

rm_non_words(x)
ex_non_words(x)
# }

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