On Thu, 3 Dec 2009, KENNETH R CABRERA wrote:
Hi R users:
f1<-function(l1,idx){
? f2<-function(i,l1)?? l1[[i+1]]<<-c(l1[[i]],l1[[i+1]][-1])
? lapply(idx,f2,l1)
? return(l1)
}
l<-list(c(1,2,3),c(4,5),c(6,7,8))
l2<-f1(l,1:(length(l)-1))
l2
I got:
[[1]]
[1] 1 2 3
[[2]]
[1] 1 2 3 5
[[3]]
[1] 4 5 7 8
But what I want in the last position of l2 is the acummualte of the
assignations...
I would like to have:
[[1]]
[1] 1 2 3
[[2]]
[1] 1 2 3 5
[[3]]
[1] 1 2 3 5 7 8
How can I do that?
Reduce( function(x,y) c( x, y[-1] ) , l , accumulate=TRUE)
HTH,
Chuck
Thank you for your help.
Kenneth
[[alternative HTML version deleted]]
Charles C. Berry (858) 534-2098
Dept of Family/Preventive Medicine
E mailto:cbe...@tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
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