On 20-09-2013, at 12:52, Christofer Bogaso <bogaso.christo...@gmail.com> wrote:
> Hello again,
>
> I have one question on subscripting matrix. Let say I have following matrix:
>
>> Mat <- matrix(1:9, 3)
>> colnames(Mat) <- c("a", "b", "a")
>> Mat
> a b a
> [1,] 1 4 7
> [2,] 2 5 8
> [3,] 3 6 9
>
>
> Now I want to fetch data for colnames 'a'.I did following:
>
>> Mat[, "a"]
> [1] 1 2 3
>
>
> However it is not taking second 'a' colume. Basically I expected to
> get 1st and 3rd columns
>
> Can somebody tell me how to achieve that?
>
I think this is just silly.
How about
Mat[,which(colnames(Mat)=="a")]
Berend
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