qdapRegex (version 0.1.1)

rm_number: Remove/Replace/Extract Numbers

Description

Remove/replace/extract number from a string (works on numbers with commas, decimals and negatives).

Usage

rm_number(text.var, trim = !extract, clean = TRUE, pattern = "@rm_number",
  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_number uses the rm_number regex from the regular expression dict

replacement

Replacement for matched pattern.

extract

logical. If TRUE the numbers 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 number removed.

References

The number regular expression was taken from: http://stackoverflow.com/a/5917250/1000343 authored by Justin Morgan.

See Also

gsub, stri_extract_all_regex

Examples

x <- c("-2 is an integer.  -4.3 and 3.33 are not.",
    "123,456 is a lot more than -.2",
    "hello world -.q")
rm_number(x)
rm_number(x, extract=TRUE)