matrix(a, ncol=3, nrow=4, byrow=TRUE)
or
> dim(a) <- c(3,4)
> a <- t(a)
> a
[,1] [,2] [,3]
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9
[4,] 10 11 12
Depending on the context of the problem.
Sarah
On Thu, Mar 17, 2011 at 7:59 AM, Bodnar Laszlo EB_HU
<laszlo.bod...@erstebank.hu> wrote:
> Hi again,
>
> I'd like to ask you a question again.
>
> I have a matrix like this:
> a <-matrix(c(1,2,3,4,5,6,7,8,9,10,11,12))
> a
>
> [,1]
> [1,] 1
> [2,] 2
> [3,] 3
> [4,] 4
> [5,] 5
> [6,] 6
> [7,] 7
> [8,] 8
> [9,] 9
> [10,] 10
> [11,] 11
> [12,] 12
>
> Is there a proper way to change the dimensions of this matrix so that I'll
> get this as a result:
> [,1] [,2] [,3]
> [1,] 1 2 3
> [2,] 4 5 6
> [3,] 7 8 9
> [4,] 10 11 12
>
> Thank you very much and have a pleasant day,
> Laszlo
>
--
Sarah Goslee
http://www.functionaldiversity.org
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