[R] vector to matrix transformation

[Petr Pikal]

On 3 Dec 2004 at 11:39, Gwenael Jacob wrote:

> Dear,
> 
> Some analysis (linear regression) can only be 
> done from a vectorized dataset whereas others 
> require a matrix (Mantel tests). I use the two 
> analyses and thus need to format my data in 
> matrix and vector. I spent some time trying to 
> solve the problem and I just gave up. Did anyone 

Hi Gwenael

You probably gave up too early

did you read  ?as.matrix, ?as.vector

> x<-matrix(1:6,3,2)
> x
     [,1] [,2]
[1,]    1    4
[2,]    2    5
[3,]    3    6
> as.vector(x)
[1] 1 2 3 4 5 6

> y<-as.vector(x)

> z<-matrix(y,3,2)
> z
     [,1] [,2]
[1,]    1    4
[2,]    2    5
[3,]    3    6

Cheers
Petr






> knows how to transform a matrix into a vector and 
> back-transform a vector into a matrix?
> 
> Thanks by advance,
> GwenaĂŤl Jacob
> -- 
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Petr Pikal
petr.pikal at precheza.cz