[R] Storing Matrices into Hash

Erik Iverson iverson at biostat.wisc.edu
Fri Aug 1 04:46:33 CEST 2008

Gundala Viswanath wrote:
> Thanks so much Erik,
> But how do you include that in a loop.
> I tried this, doesn't seem to work. Please advice:
> __BEGIN__
> all_mat <- NULL
> for (matno in 1:10) {
>     mat <- process_to_create_matrix(da[matno])
>     all_mat <- list(all_post, matno = mat)
> }

I'm not exactly sure what you're up to, what is all_post, and what is "da"?

You might look at the lapply function as an option for avoiding the loop 
and writing cleaner code.

Something like:

all_mat <- lapply(da, process_to_create_matrix)

may or may not work depending on what "da" is.

Please see the footer of this message regarding reproducible, 
self-contained example code.


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