qdapRegex (version 0.1.1)

rm_non_ascii: Remove/Replace/Extract Non-ASCII

Description

Remove/replace/extract non-ASCII substring from a string. This is the template used by other qdapRegex rm_XXX functions.

Usage

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

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_ascii uses the rm_non_ascii regex from the regular expressio

replacement

Replacement for matched pattern.

extract

logical. If TRUE the all non-ASCII strings are extracted into a list of vectors.

dictionary

A dictionary of canned regular expressions to search within if pattern begins with "@rm_".

ascii.out

logical. If TRUE output is given in non-ASCII format, otherwise "byte" is used.

...

ignored.

Value

• Returns a character string with "all caps" removed.

Warning

iconv is used within rm_non_ascii. iconv's behavior across operating systems may not be consistent.

References

The email regular expression was taken from: http://stackoverflow.com/a/25469131/1000343

See Also

gsub, stri_extract_all_regex

Examples

x <- c("Hello World", "Ekstr\xf8m", "J\xf6reskog", "bi\xdfchen Z\xfcrcher")
Encoding(x) <- "latin1"
x

rm_non_ascii(x)
rm_non_ascii(x, replacement="<<FLAG>>")
rm_non_ascii(x, extract=TRUE)
rm_non_ascii(x, extract=TRUE, ascii.out=FALSE)