Creating a sequential list of letters with R

Question

I would like to be able to create a sequence of letters in R (to assist in importing data from a SPSS file)

It\'s quite easy to create a sequence of numbers, for exa

Answer 1

Guess you want to get A-1, A-2, A-3, B-1, B-2, B-3, C-1, C-2, C-3 and so on...

I tried this

replicate(3, paste0(LETTERS[1:10], sep="-", 1:3, collapse=", ")

But this way I get

A-1, B-2, C-3, D-1, E-2, F-3, G-1, H-2, I-3, J-1" "A-1, B-2, C-3, D-1, E-2, F-3, G-1, H-2, I-3, J-1, A-1, B-2, C-3, D-1, E-2, F-3, G-1, H-2, I-3, J-1"

I also tried

paste0(replicate(3, LETTERS[1:10]), sep = "-", 1:3)

but got the same results..

How can I get the desired sequence