On 06 Dec 2016, at 11:17 , Jim Lemon <[email protected]> wrote:
> Hi Paul,
> The easy to understand way is:
>
> n <- c(1:10)
> # Create empty list to store vectors
> list_of_vecs <- list()
>
> # Create n vectors of random numbers - length 10. This works ok.
> for (i in n){
> list_of_vecs[[i]]<-rnorm(10,0,1)
> }
As a principle, you want
list_of_vecs <- vector("list", 10)
to avoid extending the list on each iteration.
However, a simpler way is
replicate(10, rnorm(10), simplify=FALSE)
(where the simplify bit prevents conversion to 10x10 matrix)
or
lapply(1:10, function(i) rnorm(10))
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: [email protected] Priv: [email protected]
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