Extract a part of a string, defined as regular expression.
Usage
StrExtract(x, pattern)
Arguments
x
a character vector where matches are sought, or an object which can be coerced by as.character to a character vector.
pattern
character string containing a regular expression (or character string for fixed = TRUE) to be matched in the given character vector. Coerced by as.character to a character string if possible. If a character vector of length 2 or more is supplied, the first element is used with a warning. Missing values are not allowed.