[R] reshape matrices

[jim holtman]

Does this do what you want:

> a <- 1:12
> dim(a) <- c(2,2,3)
> a
, , 1

     [,1] [,2]
[1,]    1    3
[2,]    2    4

, , 2

     [,1] [,2]
[1,]    5    7
[2,]    6    8

, , 3

     [,1] [,2]
[1,]    9   11
[2,]   10   12

> dim(a) <- c(4,3)
> (b <- t(a))
     [,1] [,2] [,3] [,4]
[1,]    1    2    3    4
[2,]    5    6    7    8
[3,]    9   10   11   12
> b[,c(1,3,2,4)]
     [,1] [,2] [,3] [,4]
[1,]    1    3    2    4
[2,]    5    7    6    8
[3,]    9   11   10   12
>
>
>


On Tue, Jul 1, 2008 at 6:05 AM, Francisco Javier Santos Alamillos
<fsantos at ujaen.es> wrote:
> Hello everyone,
>
> I need reshape an array. For example, if we have next array:
>
>> a <- c(1,2,3,4,5,6,7,8,9,10,11,12)
>> dim(a) <- c(2,2,3)
>> a
> , , 1
>
>     [,1] [,2]
> [1,]    1    3
> [2,]    2    4
>
> , , 2
>
>     [,1] [,2]
> [1,]    5    7
> [2,]    6    8
>
> , , 3
>
>     [,1] [,2]
> [1,]    9   11
> [2,]   10   12
>
> I need to get next matrices:
>
> 1   2   3   4
> 5   6   7   8
> 9 10 11 12
>
> 1   3   2   4
> 5   7   6   8
> 9 11 10  12
>
>
> Does any function exist that can be able to do it ?
>
> Thanks in advance and sorry for my english.
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?