[R] Transfer a 3-dimensional array to a matrix in R

[John Laing]

> x <- array(1:18, dim=c(3, 2, 3))
> x
, , 1

     [,1] [,2]
[1,]    1    4
[2,]    2    5
[3,]    3    6

, , 2

     [,1] [,2]
[1,]    7   10
[2,]    8   11
[3,]    9   12

, , 3

     [,1] [,2]
[1,]   13   16
[2,]   14   17
[3,]   15   18

> apply(x, 3, t)
     [,1] [,2] [,3]
[1,]    1    7   13
[2,]    4   10   16
[3,]    2    8   14
[4,]    5   11   17
[5,]    3    9   15
[6,]    6   12   18


On Tue, Oct 20, 2015 at 12:39 PM, Chunyu Dong <dongchunyu2004 at 163.com>
wrote:

> Hello!
>
>
> Recently I am trying to transfer a large 3-dimensional array to a matrix.
> For example, a array like:
> , , 1
>      [,1] [,2]
> [1,]    1    4
> [2,]    2    5
> [3,]    3    6
> , , 2
>      [,1] [,2]
> [1,]    7   10
> [2,]    8   11
> [3,]    9   12
> , , 3
>      [,1] [,2]
> [1,]   13   16
> [2,]   14   17
> [3,]   15   18
>
>
> I would like to transfer it to a matrix like:
> 1        7          13
> 4        10        16
> 2        8          14
> 5        11        17
> 3        9          15
> 6        12        18
>
>
> Could you tell me how to do it in R ? Thank you very much!
>
>
> Best regards,
> Chunyu
>
>
>
>
>
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>
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