Re: [R] allocation/initialization of arrays/lists

2009-07-06 Thread Don MacQueen
Initializing like this is generally recommended only when the object sizes get very big. Otherwise it's ok to grow your object as you go (i.e., append to it on each iteration). When I want to initialize a list, I do this: array <- list() length(array) <- n ## then, for (i in 1:n) {

Re: [R] allocation/initialization of arrays/lists

2009-07-05 Thread David Winsemius
On Jul 5, 2009, at 2:43 PM, Martin Morgan wrote: Hi ZRL, zrl wrote: Dear list, I have a question regarding how to allocate or initialize the proper type of the arrays or lists. I have a for loop, each iteration, I want it to assign a subset of a data frame to an element of an array or

Re: [R] allocation/initialization of arrays/lists

2009-07-05 Thread Martin Morgan
Hi ZRL, zrl wrote: > Dear list, > > I have a question regarding how to allocate or initialize the proper type of > the arrays or lists. > > I have a for loop, each iteration, I want it to assign a subset of a data > frame to an element of an array or list. > However, I am wondering how I should

Re: [R] allocation/initialization of arrays/lists

2009-07-05 Thread John Kane
Try mylist <- NULL and then just assign the subsets to each element of the list mylist[[1]] <- data1[,1] as an example --- On Sun, 7/5/09, zrl wrote: > From: zrl > Subject: [R] allocation/initialization of arrays/lists > To: r-h...@stat.math.ethz.ch > Received: Sunday, July 5, 2009, 1:58 P