R: Find Position of First Occurrence Of a String

StrPos {DescTools} | R Documentation

## Find Position of First Occurrence Of a String

### Description

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`.

### 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` | 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 `regexpr`.

### Details

This is just a wrapper for the function `regexpr`.

### Value

a vector of the first position of pattern in x

### Author(s)

Andri Signorell <andri@signorell.net>

### See Also

`StrChop`, `regexpr`

### Examples

    StrPos(x = levels(d.pizza$driver), pattern = "t")

[Package DescTools version 0.99.34 Index]