[R] getting last 2 charcters of a string, other "text" functions?

[Earl F. Glynn]

"t c" <quantpm at yahoo.com> wrote in message
news:20051031153755.80990.qmail at web35006.mail.mud.yahoo.com...
> I wish to obtain the right-most n characters of a character string?  What
is the appropriate function?

substr will work:

> x <- c("abcd", "xyz")

> N <- 2
> substr(x, nchar(x)-N+1, nchar(x))
[1] "cd" "yz"

> N <- 3
> substr(x, nchar(x)-N+1, nchar(x))
[1] "bcd" "xyz"

efg