rle {base} | R Documentation |
Compute the lengths and values of runs of equal values in a vector or the reverse operation.
rle(x) print(x, digits = getOption("digits"), ...) inverse.rle(x, ...)
x |
a simple vector for rle() or an object of class
"rle" for print() or inverse.rle() . |
digits, ... |
potentially further arguments to the corresponding method. |
rle()
returns an object of class "rle"
which is a list
with components
lengths |
an integer vector containing the length of each run. |
values |
a vector of the same length as lengths with the
corresponding values. |
inverse.rle()
is the inverse function of rle()
.
x <- rev(rep(6:10, 1:5)) rle(x) ## lengths [1:5] 5 4 3 2 1 ## values [1:5] 10 9 8 7 6 z <- c(TRUE,TRUE,FALSE,FALSE,TRUE,FALSE,TRUE,TRUE,TRUE) rle(z) rle(as.character(z)) stopifnot(x == inverse.rle(rle(x)), z == inverse.rle(rle(z)))