[R] substring/strsplit question

[Erik Iverson]

## untested

last <- tail(x, n = 1)
first <- head(x, n = length(x) - 1)

Erin Hodgess wrote:
> Dear R People:
> 
> Here is a toy example:
> 
>> x <- c("2E","5W","12H")
>> substr(x,2,2)
> [1] "E" "W" "2"
> 
> Sometimes x has 3 elements, sometimes 2.  I want to extract the last
> element, and then extract the other 1 or 2 elements.
> 
> How can I do this, please?
> 
> TIA,
> Sincerely,
> Erin
> 
>