R help - Jun 2007 - Creating different matrices in a loop

Hello,

I have a big matrix of size (20,5) -bmat . I have to loop though the rows in
the matrix and create DIFFERENT matrices each time I go through the loop.

counts=c(4,6,10);

p=1;
for (i in 1:length(counts))
{

    smat=bmat[p:p+i-1,];
    p=p+i;
}

The problem is smat overwrites itself each time inside the loop. I would
like to have smat1, smat2, smat3 instead of a single vector smat. Basically
I wanted to change the name of the matrix "smat" each time the loop
runs so
that i will have 3 different matrices.

Any help will be very much appreciated.

Thanks,
Suman

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You can use a 'list' for this:

counts=c(4,6,10);

p=1;
smat <- list()
for (i in 1:length(counts))
{

   smat[[i]] <- bmat[p:p+i-1,];
   p=p+i;
}




On 6/23/07, suman Duvvuru <duvvuru.suman@gmail.com>
wrote:
>
> Hello,
>
> I have a big matrix of size (20,5) -bmat . I have to loop though the rows
> in
> the matrix and create DIFFERENT matrices each time I go through the loop.
>
> counts=c(4,6,10);
>
> p=1;
> for (i in 1:length(counts))
> {
>
>    smat=bmat[p:p+i-1,];
>    p=p+i;
> }
>
> The problem is smat overwrites itself each time inside the loop. I would
> like to have smat1, smat2, smat3 instead of a single vector smat.
> Basically
> I wanted to change the name of the matrix "smat" each time the
loop runs
> so
> that i will have 3 different matrices.
>
> Any help will be very much appreciated.
>
> Thanks,
> Suman
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@stat.math.ethz.ch 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?

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