[R] Summarizing elements of a list

B77S bps0002 at auburn.edu
Fri Dec 2 00:23:59 CET 2011

Someone is bound to know a better way, but...

subset(unlist(Version1_), subset=names(unlist(Version1_))=="First")

LCOG1 wrote
> Hi everyone, 
>    I looked around the list for a while but couldn't find a solution to my
> problem.  I am storing some results to a simulation in a list and for each
> element i have two separate vectors(is that what they are called, correct
> my vocab if necessary). See below
> Version1_<-list()
> for(i in 1:5){
> 	Version1_[[i]]<-list(First=rnorm(1),Second=rnorm(1))
> }
> What I want is to put all of the elements' 'First' vectors into a single
> list to box plot. But whats a more elegant solution to the below?
> c(Version1_[[1]]$First,Version1_[[2]]$First,Version1_[[3]]$First,Version1_[[4]]$First,Version1_[[5]]$First)
> since i have 50 or more simulations this is impractical and sloppy.  Do I
> need to store my data differently or is their a solution on the back end? 
> Thanks all.  
> Josh

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