> tmp <- matrix(c(5,3,1, 1,3,2, 1,2,4), 3, 3)
> tmp
     [,1] [,2] [,3]
[1,]    5    1    1
[2,]    3    3    2
[3,]    1    2    4
> rep(t(tmp), each=3)
 [1] 5 5 5 1 1 1 1 1 1 3 3 3 3 3 3 2 2 2 1 1 1 2 2 2 4 4 4
>

On Mon, May 30, 2011 at 4:22 PM, Charles Ellis <CharlesE@mairesearch.com>wrote:

> Hi,
>
> I am trying to transform a data matrix into a vector and have not be able
> to accomplish want I am looking for.  The setup is as follows. I start with
> a 3 x 3 matrix:
>
> 5 1 3
> 3 3 2
> 1 2 4
>
> I would like to transorm it into a 27 x 1 vector of the follwing form
>
> 5
> 5
> 5
> 1
> 1
> 1
> 3
> 3
> 3
> .
> .
> .
> 1
> 1
> 1
> 2
> 2
> 2
> 4
> 4
> 4
>
> In essense I want to create a vector in which each element of the original
> matrix is repeated three times, starting with cell [1,1] and ending with
> cell [3,3].
> This is small example of the larger problem I am trying to solve.  The
> actual data matrix is 352 x 15, and I would like to end up with a 26,400 x 1
> vector.  So each element of the data matrix is repeated 5 times.
>
> Any suggestions or hints would be much appreciated.  Thanks!
>
> I am using;
> R version 2.12.2 (2011-02-25)
> Copyright (C) 2011 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: i386-pc-mingw32/i386 (32-bit)
>
> Cheers,
> Charles
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

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