[R] Break Matrix

[Jacques VESLOT]

mat <- matrix(rnorm(331*12),331,12)

z <- rep(seq(0,331,by=11)+1, each=2)
zz <- z[-c(1,length(z))]

ind <- as.data.frame(matrix(zz, nr=2))

lapply(ind, function(x) mat[x[1]:x[2],])

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Jacques VESLOT

CNRS UMR 8090
I.B.L (2ème étage)
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B.P. 245
59019 Lille Cedex

Tel : 33 (0)3.20.87.10.44
Fax : 33 (0)3.20.87.10.31

http://www-good.ibl.fr
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SUMANTA BASAK a écrit :
> Hi,
> Thanks for reply. I'm sorry that i forgot to mention that from 2nd 
> matrix the first row values of the second matrix (and so on..) will be 
> the first row (and so on..). Please help me.
> 
> Thanks,
> SB.
> 
> */Jacques VESLOT <jacques.veslot at good.ibl.fr>/* wrote:
> 
>     split(as.data.frame(matrix(rnorm(331*12),331,12)),
>     gl(ceiling(331/12),12,331))
> 
>     -------------------------------------------------------------------
>     Jacques VESLOT
> 
>     CNRS UMR 8090
>     I.B.L (2ème étage)
>     1 rue du Professeur Calmette
>     B.P. 245
>     59019 Lille Cedex
> 
>     Tel : 33 (0)3.20.87.10.44
>     Fax : 33 (0)3.20.87.10.31
> 
>     http://www-good.ibl.fr
>     -------------------------------------------------------------------
> 
> 
>     SUMANTA BASAK a écrit :
>      > Hi All,
>      >
>      > I have a (331*12) matrix. I wan t to braek it into 28 parts each
>     window having 12 rows, so that each matrix become (12*12) matrix.
>     How can i do this.
>      >
>      > Thanks,
>      > Sumanta.
>      >
>      >
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