On 22/01/2016 2:29 AM, TJUN KIAT TEO wrote:
I am trying to populate an array of lists in R . Here is my code
TunePar<-matrix(list(Null),2,2)
TunePar[1,1]=list(G=2)
But when I type TunePar[1,1,], all I get is 2. The G has disappeared. why?
If I do this
Test=list(G=2)
Test
$G
[1] 2
Matrices generally don't keep the names of elements assigned to them.
What you did is similar to
x <- matrix(0, 2,2)
x[1,1] <- c(G=2)
x
which loses the name.
Working with lists is different, because you need to distinguish between
subsets and elements. So you'd get what you want by assigning your list
to the element using
TunePar[[1,1]] <- list(G=2)
At this point, TunePar[1,1] is a list containing list(G=2): it prints as
[[1]]
[[1]]$G
[1] 1
To get the result you want, you also need to access the element instead
of the subset: TunePar[[1,1]] will print
$G
[1] 1
Duncan Murdoch
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
