Create a matrix of list:

> A = matrix(1:4,2,2)
> B = matrix(1:25,5,5)
> C = matrix(1,3,3)
> D = matrix(1,4,4)
> x <- list(A,B,C,D)
> dim(x) <- c(2,2)
> x[[1,1]]
     [,1] [,2]
[1,]    1    3
[2,]    2    4
> x[[2,2]]
     [,1] [,2] [,3] [,4]
[1,]    1    1    1    1
[2,]    1    1    1    1
[3,]    1    1    1    1
[4,]    1    1    1    1



On 5/21/07, Scott Hyde <hydes@byuh.edu> wrote:
>
>
> I'd like to have a three dimensional array of matrices.   I thought I
> could construct a five dimensional array to have the three dimensional array
> of matrices.  However, not all of the matrices in the array have the same
> dimensions, which seems to mean I can't use a five dimensional array.
>
> What I'd like is this:
>
> A = matrix(1:4,2,2)
> B = matrix(1:25,5,5)
> C = matrix(1,3,3)
> D = matrix(1,4,4)
>
> I'd like to construct an array for which, if I type F[1,1], it returns
> matrix A, type F[1,2] and it returns B, type F[2,1] and it returns C, or
> type F[2,2] and it returns D.
>
> Essentially, I'd like to be able to access them like they were elements of
> a matrix.  Although this example is only a two dimensional array of
> matrices, I'd like it to also work with three dimensions also.
>
> The only thing I thought of to try was to make an array of lists and store
> the matrices inside of an array of lists (where each matrix is stored as a
> list with one item).
>
> Any suggestions?
>
> -Scott
>
> ______________________________________________
> 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?

	[[alternative HTML version deleted]]

