Søren Højsgaard
2008-Aug-20 23:16 UTC
[R] Extracting eg A[, , 3, 1, ] from an array but using dimension names and levels
Consider the extraction> HairEyeColor[,3,1]Black Brown Red Blond 10 25 7 5 Suppose I have the appropriate dimensions and levels given as variables, e.g. d1 <-2 l1 <-3 d2 <-3 l2 <-1 How can I then make the "extraction" above using d1, l1, d2, l2 (for an array of arbitrary dimension)? Best regards S?ren
Gabor Grothendieck
2008-Aug-21 00:03 UTC
[R] Extracting eg A[, , 3, 1, ] from an array but using dimension names and levels
Try this:
do.call("[", c(list(HairEyeColor), list(TRUE, 3, 1)))
On Wed, Aug 20, 2008 at 7:16 PM, S?ren H?jsgaard
<Soren.Hojsgaard at agrsci.dk> wrote:> Consider the extraction
>
>> HairEyeColor[,3,1]
> Black Brown Red Blond
> 10 25 7 5
>
> Suppose I have the appropriate dimensions and levels given as variables,
e.g.
> d1 <-2
> l1 <-3
> d2 <-3
> l2 <-1
>
> How can I then make the "extraction" above using d1, l1, d2, l2
(for an array of arbitrary dimension)?
>
> Best regards
> S?ren
>
>
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