[R] indexing an array using an index-array, but one entry being ', '

[Christoph Lehmann]

Hi
I have the following array:

test <- array(c(1:16), dim = c(3,4,3))
test
## I call some enries using an index array
test.ind <- array(rbind(c(1,2,1), c(3,3,2)), dim = c(2,3))
test[test.ind]

## suppose I want all values in the 2nd row and 4th col over
## all three 3rd dimensions
test[2,4,]


how to specify a test.ind array with the last index left with ',' i.e
test.ind should be evaluated as "2, 4, , " so that it can be
calledlike above as test[test.ind] and the
result should be [1] 11  7  3

thanks for a hint
Cheers
christoph