On 16 Feb 2015, at 17:43 , Troels Ring <tr...@gvdnet.dk> wrote:
> Dear friends - this is simple I know but I can figure it out without your
> help.
> I have for each of 2195 instances 10 variables measured at specific times
> from 6 to several hundred, so if I just take one of the instances, I can make
> a list of the 10 variables together with their variable times. But when I
> have 2195 such instances I cannot get it how to make a list of these
> individual lists
>
> As a toy example demonstrating mercilessly my problem, if ASL[j] is mean to
> take the list of here 5 entries made in RES[[i]] and I write this (ignoring
> the times) it certainly doesn't work
> ASL <- list()
> RES <- list()
> for (j in 1:5){
> for (i in 1:5)
> ASL[[j]] <-
> RES[[i]] <- i^j }
Your description doesn't quite make sense to me, but if you really want ASL to
be a list of lists, you want each member to be a list and the (i,j)th item
accessed as ASL[[i]][[j]]. So I'd expect to see something like
for (j .... {
ASL[[j]] <- list()
for (i ....
ASL[[j]][[|]] <- ....
}
You also really don't want to start with an empty list and extend it on every
iteration. If you need an n-element list, preallocate it using vector(n,
mode="list").
If the above doesn't make sense, rephrase the question....
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
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