Replaces consecutive elements
If x[i+1]=x[i] then x[i+1] is replaced by by for i=1,...length(x)-1.
replace_consecutive(x, by = "", fun_for_identical = base::identical)
x |
A character or factor. |
by |
A character with length 1. |
fun_for_identical |
A function with two arguments called |
The = is defined by function identical by default.
This function can be changed by argument fun_for_identical
A character, same length as x, now with consecutives replaced by by.
If length(x) < 2, x is returned unchanged.
x <- rep(c('a','b','c','d'), times=c(2,4,1,3))
x
## Not run: replace_consecutive(x)
# NA should not be identical. So change fun_for_identical
fun_for_identical <- function(x,y) !is.na(x) && !is.na(y) && identical(x,y)
x <- c(1,1,3,3,NA,NA, 4)
x
## Not run: replace_consecutive(x, by="99")
## Not run: replace_consecutive(x, by="99", fun_for_identical = fun_for_identical)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.