[R] arrays of lists in R ("cell arrays" in Matlab)

[Gabor Grothendieck]

Try this:

L <- list(sqrt, letters, pi, 1:4)
dim(L) <- c(2,2)
L[[1,1]](4) # 2


On 2/15/06, Giuseppe Pagnoni <gpagnon at emory.edu> wrote:
> Dear all
>
> I would like to have some data in the form of a 2-dimensional array
> (matrix) of lists, so that I can easily find the desired list object by
> indexing the structure by rows and columns.  In matlab there exists a
> data type called "cell array": a matrix of "cells", which are composite
> objects very similar to R lists.
>
> I know that in R you can create 1-dimensional arrays of lists, either
> with the vector() function or by making a list of lists, but it is not
> clear to me whether it is actually possible to have 2-dimensional arrays
> of lists.
>
> thank you very much for any suggestion
>
> best
>
>    giuseppe
>
> --
> -----
> Giuseppe Pagnoni
> Psychiatry and Behavioral Sciences
> Emory University School of Medicine
> 101 Woodruff Circle, Suite 4000
> Atlanta, GA, 30322
> tel: 404.712.8431
> fax: 404.727.3233
>
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