R: removing the last elements of a vector

Question

How can I remove the last 100 elements of a zoo series?

I know the name[-element] notation but I can\'t get it work to substract a full section

Answer 1

I bet length<- is the most efficient way to trim a vector:

> x <- 1:10^5
> length(x)
[1] 100000
> length(x) <- 3
> x
[1] 1 2 3