Find Position of First Occurrence Of a String
Returns the numeric position of the first occurrence of a substring within a string. If the search string is not found, the result will be NA.
StrPos(x, pattern, pos = 1, ...)
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 |
integer, defining the start position for the search within x. The result will then be relative to the begin of the truncated string. Will be recycled. |
... |
the dots are passed to the function |
This is just a wrapper for the function regexpr.
a vector of the first position of pattern in x
Andri Signorell <andri@signorell.net>
StrPos(x = levels(d.pizza$driver), pattern = "t")
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