Aliases: grouping
Keywords: manip
### ** Examples (ii <- grouping(x <- c(1, 1, 3:1, 1:4, 3), y <- c(9, 9:1), z <- c(2, 1:9)))
[1] 6 5 2 1 7 4 10 8 3 9 attr(,"ends") [1] 1 2 3 4 5 6 7 8 9 10 attr(,"maxgrpn") [1] 1 attr(,"class") [1] "grouping" "integer"
## 6 5 2 1 7 4 10 8 3 9 rbind(x, y, z)[, ii]
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] x 1 1 1 1 2 2 3 3 3 4 y 5 6 9 9 4 7 1 3 8 2 z 5 4 1 2 6 3 9 7 2 8