Upon re-reading your question, I did not provide what you wanted.
In your example, 'x' is a character vector that has three elements. Each element of 'x' has two or three characters. Now I think I see what you want:
## untested, for the last character: substr(x, nchar(x), nchar(x)) ## untested, for the first character(s) substr(x, 1, ifelse(nchar(x) == 3, 2, 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
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