How do I subset a list in R by selecting all elements in a list except for one value?

Question

So basically I have a list called "parameters" with values (x1, x2, ... , xj). I want to, through a for loop, subset this list, but each time leave out one element. So for example I want the first subset (through the first iteration of the for loop) to be (x2, x3, ..., xj), and the next to be (x1, x3, ..., xj) and so on, until the last subset which would be (x1, x2, ... , xj-1). How do I do this?

Answer 1

this could be useful

> Vector <- paste("x", 1:6, sep="")
> lapply(1:length(Vector), function(i) Vector[-i])

Answer 2

I'm assuming by "list" you mean vector. If so:

parameters <- rnorm(100)
y <- matrix(nrow=length(parameters)-1,ncol=length(parameters))
for(i in 1:length(parameters))
    y[,i] <- parameters[-i]

If by "list", you actually mean a list, the code is basically the same, but just do parameters <- unlist(parameters) first.