These functions provide convenient pattern finding and substitution for multiple patterns.
multiGSub(patterns, replacements, x, ...)
multiSub(patterns, replacements, x, ...)
multiGrep(patterns, x, ..., sort = TRUE, value = FALSE, invert = FALSE)
multiGrepl(patterns, x, ...)multiSub and multiGSub return a character vector of the same length as x, with all
patterns replaces by their replacements in each element of x. multiSub replaces each pattern in
each element of x only once, multiGSub as many times as the pattern is found.
multiGrep returns the indices of those elements in x in which at least one of patterns
was found, or, if invert is TRUE, the indices of elements in which none of the patterns were found. If value
is TRUE, values rather than indices are returned.
multiGrepl returns a logical vector of the same length as x, with TRUE is any of the
patterns matched the element of x, and FALSE otherwise.
A character vector of patterns.
A character vector of replacements; must be of the same length as patterns.
Character vector of strings in which the pattern finding and replacements should be carried out.
Logical: should the output indices be sorted in increasing order?
Logical: should value rather than the index of the value be returned?
Logical: should the search be inverted and only indices of elements of x matching none
of the patterns be returned?
Peter Langfelder
For each element of x, patterns are sequentiall searched for and (for multiSub and
multiGSub substituted with the corresponding replacement.