[R] Re-sort list of vectors

[Liaw, Andy]

If all vectors in the list have the same length, why not use a matrix?  Then
you'd just transpose the matrix if you need to.  If you really have to have
it as a list, here's one possibility:

> x <- list("1"=c(a=1, b=2, c=3), "2"=c(a=4, b=5, c=6))
> x
$"1"
a b c 
1 2 3 

$"2"
a b c 
4 5 6 
> as.list(as.data.frame(t(matrix(unlist(x), nrow=3))))
$V1
[1] 1 4

$V2
[1] 2 5

$V3
[1] 3 6

Andy


> From: Jan Hummel
> 
> Hi.
> Can anyone suggest a simple way to re-sort in R a list of 
> vectors of the
> following form?
> 
> input
> $"1"
> 	a	b	c
> 	1	2	3
> $"2"
> 	a	b	c
> 	4	5	6
> 
> Output should be something like:
> "a"
> 	"1" 1
> 	"2" 4
> "b"
> 	"1" 2
> 	"2" 5
> "c"
> 	"1" 3
> 	"2" 6
> 
> I've been futzing with mapply(), outer(), split(), rbind() 
> and so on but
> haven't found an elegant solution.
> 
> Thanks,
> Jan.
> 
> P.S. E-mailed CCs of posted replies appreciated.
> 
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