stringr (version 0.3)

str_sub: Extract substrings from a character vector.

Description

Extract substrings from a character vector.

Usage

str_sub(string, start=0, end=Inf)

Arguments

string

input character vector

start

integer vector giving position of first charater in substring, defaults to first character.

end

integer vector giving position of last character in substring, defaults to last character.

Value

• character vector of substring. Will be length of longest input argument

Details

sub_str will replicate all arguments to be the same length as the longest argument. If any arguments are of length 0, the output will be a zero length character vector.

See Also

substring which this function wraps

Examples

hw <- "Hadley Wickham"

str_sub(hw, 1, 6)
str_sub(hw, end = 6)
str_sub(hw, 8, 14)
str_sub(hw, 8)
str_sub(hw, c(1, 8), c(6, 14))

str_sub(hw, seq_len(str_length(hw)))
str_sub(hw, end = seq_len(str_length(hw)))