Generate a sequence of characters from 'A'-'Z'

Question

I can make a sequence of numbers like this:

s = seq(from=1, to=10, by=1)

How do I make a sequence of characters from A-Z? This doesn\'t wor

Answer 1

R.oo package has an intToChar function, that uses ASCII values, if LETTERS and letters aren't any good. A is 65 in ASCII:

> require(R.oo)
> intToChar(65:79)
 [1] "A" "B" "C" "D" "E" "F" "G" "H" "I" "J" "K" "L" "M" "N" "O"

or you can use the fact that the lowest unicode numbers are ascii and hence intToUtf8 in R-base like this:

> intToUtf8(65:78,multiple=TRUE)
 [1] "A" "B" "C" "D" "E" "F" "G" "H" "I" "J" "K" "L" "M" "N"

or faff around with rawToChar:

> rawToChar(as.raw(65:78))
[1] "ABCDEFGHIJKLMN"