How do you convert information from rle into a data frame

Question

I want to convert the information contained in a the "rle" function in R, into a data frame, but couldn't find how. For example, for the vector

x <- c(1,1,1,2,2,3,4,4,4)

I want a dataframe that has two columns of 1 2 3 4 and 3 2 1 3

Any help would be greatly appreciated!

Answer 1

Use unclass to remove the rle class. Then you can just use data.frame on the resulting list.

data.frame(unclass(rle(x)))
##   lengths values
## 1       3      1
## 2       2      2
## 3       1      3
## 4       3      4