rm_endmark: Remove/Replace/Extract Endmarks

In qdapRegex: Regular Expression Removal, Extraction, and Replacement Tools

Remove/Replace/Extract Endmarks

Description

Remove/replace/extract endmarks from a string.

Usage

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

ex_endmark(
  text.var,
  trim = !extract,
  clean = TRUE,
  pattern = "@rm_endmark",
  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_endmark uses the rm_dollar regex from the regular expression dictionary from the dictionary argument.
replacement	Replacement for matched pattern.
extract	logical. If TRUE the endmark strings 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.

Details

The default regular expression used by rm_endmark finds endmark punctuation used in the qdap package; this includes ! . ? * AND |. This behavior can be altered (to ; AND : or to use just ! . AND ?) by using a secondary regular expression from the regex_usa data (or other dictionary) via (pattern = "@rm_endmark2" or pattern = "@rm_endmark3"). See Examples for example usage.

Value

Returns a character string with endmarks 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_hash(), rm_nchar_words(), rm_non_ascii(), rm_non_words(), 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

x <- c("I like the dog.", "I want it *|", "I;", 
    "Who is| that?", "Hello world", "You...")

rm_endmark(x)
ex_endmark(x)

rm_endmark(x, pattern="@rm_endmark2")
ex_endmark(x, pattern="@rm_endmark2")

rm_endmark(x, pattern="@rm_endmark3")
ex_endmark(x, pattern="@rm_endmark3")

qdapRegex documentation built on Oct. 17, 2023, 5:06 p.m.