Displaying 1 result from an estimated 1 matches for "rep_along".
2012 Jan 06
1
seq_along and rep_along
...mtcars)[1])
seq_len(dim(mtcars)[2])
I often find myself wanting to iterate over the rows or column of a
data frame, and there isn't a particularly nice idiom if you want to
avoid problems with zeros - you have to use seq_len(nrow(df)) etc
* To me, it would seem be very natural to have a rep_along function:
rep_along <- function(x, y) rep(x, length.out = length(y))
possibly with more checking for the case where the lengths aren't
integer multiples.
I'd be happy to submit proposed implementations/documentation if there
was interest.
Hadley
--
Assistant Professor / Dobelma...