Dear James,
this is what I understood your sorting along the third dimension to be:
> x <- array(c(9, 9, 7, 9, 6, 5, 4, 6, 2, 1, 3, 2), dim = list(2, 2, 3))
> y <- apply (x, 1:2, sort)
> y
, , 1
[,1] [,2]
[1,] 2 1
[2,] 6 5
[3,] 9 9
, , 2
[,1] [,2]
[1,] 3 2
[2,] 4 6
[3,] 7 9
The results of apply are length (result of function) x [shape of x without the
dimensions you hand to apply).
Thus, your specified result needs rearranging the dimensions:
> y <- aperm (y, c(2, 3, 1))
> y
, , 1
[,1] [,2]
[1,] 2 3
[2,] 1 2
, , 2
[,1] [,2]
[1,] 6 4
[2,] 5 6
, , 3
[,1] [,2]
[1,] 9 7
[2,] 9 9
HTH Claudia
--
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Università degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste
phone: +39 0 40 5 58-37 68
email: cbelei...@units.it
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