qdapRegex (version 0.1.1)

rm_endmark: 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"), ...)

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 dic

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.

Value

• Returns a character string with endmarks removed.

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.

See Also

gsub, stri_extract_all_regex

Examples

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

rm_endmark(x)
rm_endmark(x, extract=TRUE)

rm_endmark(x, pattern="@rm_endmark2")
rm_endmark(x, extract=TRUE, pattern="@rm_endmark2")

rm_endmark(x, pattern="@rm_endmark3")
rm_endmark(x, extract=TRUE, pattern="@rm_endmark3")