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

[Chuck Cleland]

?nchar
?substr

rightmost <- function(x, y){substr(x, start=nchar(x) - (y - 1), 
stop=nchar(x))}

 > x <- c("asfef", "qwerty", "yuiop[", "b", "stuff.blah.yech")

 > rightmost(x, 2)
[1] "ef" "ty" "p[" "b"  "ch"

 > rightmost(x, 3)
[1] "fef" "rty" "op[" "b"   "ech"

t c wrote:
> I wish to obtain the right-most n characters of a character string?  What is the appropriate function?
> 
> 
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Chuck Cleland, Ph.D.
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