Numbering elements in a vector

Question

I would like to number the elements of a vector, assigning \'1\' to the smallest element in the vector. I know how to do this, but my solution (code included below) seems o

Answer 1

If you're using numeric or integer data you can use as.numeric(factor())

dat <- c(5,8,12,12,8,3,100)
as.numeric(factor(dat))

Also, as a side note, you should avoid using data as a variable name in R since its already a built-in function.

Answer 2

Another possibility is:

> rank(data)
[1] 2.0 3.5 5.5 5.5 3.5 1.0 7.0

You can see the argument "ties.method" for how to handle ties.

Answer 3

More compact version of your program.

dat <- c(5,8,12,12,8,3,100)
dat_sorted <- sort(unique(dat))
match(dat,dat_sorted)