[R] extracting vectors from lists of lists

[Benilton Carvalho]

oh.. and i just saw the bonus part... just replace lapply() by sapply().

b

On Dec 11, 2009, at 8:33 PM, Jennifer Young wrote:

> Good evening
> 
> I often have as output from simulations a list of various values, vectors
> and matrices.
> Supposing that I then run said simulation several times, I often want to
> extract a particular result from each simulation for plotting and,
> ideally, put it in a matrix.
> 
> A simple example
> 
> v1 <- 1:5
> v2 <- 6:10
> other1 <- "stuff"
> other2 <- "stuff"
> 
> set1 <- list(v1,other1)
> names(set1) <- c("vec","other")
> set2 <- list(v2,other2)
> names(set2) <- c("vec","other")
> 
> output <- list(set1, set2)
> 
> 
> Is there some form of lapply() that will allow me to extract v1 and v2
> (ie, the $vec elements) from both sets?
> Bonus if I can then put it into a matrix tidily.
> 
> many thanks
> Jennifer Young
> 
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