R: Count the number of times a pattern is occurring in text

txt_count {udpipe} | R Documentation

## Count the number of times a pattern is occurring in text

### Description

Count the number of times a pattern is occurring in text. Pattern counting is performed by executing a regular expression using `gregexpr` and checking how many times the regular expression occurs.

### Usage

    txt_count(x, pattern, ...)

### Arguments

`x` | a character vector with text
`pattern` | a text pattern which might be contained in `x`
`...` | other arguments, passed on to `gregexpr`

### Value

an integer vector of the same length as `x` indicating how many times the pattern is occurring in `x`

### Examples

    x <- c("abracadabra", "ababcdab", NA)
    txt_count(x, pattern = "ab")
    txt_count(x, pattern = "AB", ignore.case = TRUE)
    txt_count(x, pattern = "AB", ignore.case = FALSE)

[Package udpipe version 0.8.6 Index]