[R] Summarizing elements of a list

LCOG1 jroll at lcog.org
Thu Dec 1 23:17:35 CET 2011


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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