Hi Lisa,
Is this what you have in mind?
> temp <- c("aa", "aA", "ab")
> temp == temp[1]
[1] TRUE FALSE FALSE
HTH,
Jorge
On Tue, Apr 26, 2011 at 2:09 PM, Lisa <> wrote:
> Dear all,
>
> I just want to determine if the characters in a character string are the
> same or not. For example,
>
> temp <- c("aa", "aA", "ab")
>
> How do I determine the first one have the two same a, and the second and
> third have the different characters? Thanks in advance.
>
> Lisa
>
>
>
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