str_sub {stringr} | R Documentation |
str_sub
will recycle 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.
str_sub(string, start = 1L, end = -1L)
string |
input character vector. |
start |
integer vector giving position of first charater in substring, defaults to first character. If negative, counts backwards from last character. |
end |
integer vector giving position of last character in substring, defaults to last character. If negative, counts backwards from last character. |
Substrings are inclusive - they include the characters at
both start and end positions. str_sub(string, 1,
-1)
will return the complete substring, from the first
character to the last.
character vector of substring from start
to
end
(inclusive). Will be length of longest input
argument.
substring
which this function wraps, and
link{str_sub_replace}
for the replacement version
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, -1) str_sub(hw, -7) str_sub(hw, end = -7) str_sub(hw, seq_len(str_length(hw))) str_sub(hw, end = seq_len(str_length(hw)))