[R] Tell the difference between characters

[jim holtman]

This will handle varying length strings if you want to test for the
same character:

>  temp <- c("aa", "aA", "ab")
> x <- strsplit(temp, '')
> x
[[1]]
[1] "a" "a"

[[2]]
[1] "a" "A"

[[3]]
[1] "a" "b"

> sapply(x, function(z) all(z[1] == z))
[1]  TRUE FALSE FALSE
>


On Tue, Apr 26, 2011 at 2:09 PM, Lisa <lisajca at gmail.com> 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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>
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>



-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?