[R] column of a list

[Sean Davis]

On 1/24/06 8:21 AM, "Thomas Steiner" <finbref.2006 at gmail.com> wrote:

> I have a list of (same type) lists. I want to retrieve the same
> entries of all my objects in the outer list.
> eg:
> a<-list("2006-01-23"=list(r=5,s=c(7,12,12,11,4)),
> "2006-01-24"=list(r=6,s=c(3,8,8,9,12)))
> a[][["s"]]
> 
> gives NULL, but I am looking for all the s-vectors in order to plot
> and compare them (e changes to f in a day).

This may not be the best solution, but:

 lapply(a,function(x) {x$s})

will get your answer, I think.

Sean