If they are already a matrix in the list, then you don't have to use 'as.matrix'; you can just say:
M1 <- D[[1]] Now the question is, what do you mean by how do you index M1? Do you want to go through the list applying a function to each matrix? If so, then just 'lapply'. For example, to get the column means, you would do: mean.list <- lapply(D, colMeans) Can you explain in a little more detail the problem you are trying to solve. On 9/5/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I have created a list of "matrices" using sapply or lapply and wish to > extract each of the "matrices" as a matrix. Some of them are 2x2, 3x3, etc. > > I can do this one at a time as: > > M1<-as.matrix(D[[1]]) > > How can repeat this process for an unknown number of entries in the list? In > other words, how shall I index M1? > > Diana > > ______________________________________________ > 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? ______________________________________________ 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.
