StrPos: Find Position of First Occurrence Of a String
Description
This function finds the first occurrence of a substring within an object string.
Usage
StrPos(x, pattern, pos = 1, ...)
Arguments
x
a character vector in which to search for the pattern, or an object which can be coerced by as.character to a character vector.
pattern
character string (search string) containing the pattern to be matched in the given character vector. This can be a character string or a regular expression.
pos
pos allows, to define the start position for the search within x. The result will then be relativ to the begin of the truncated string. pos will be recycled.
Returns the numeric position of the first occurrence of needle in the haystack string. If the search string is not found, the result will be NA.
This is just a wrapper for the function regexpr.