Re: [Rd] array indexing

2008-12-05 Thread Uwe Ligges
Robin Hankin wrote: Hi. I have been pondering array indexing via matrices. > a <- array(1:27,rep(3,3)) > index <- matrix(c(1,1,1,1,2,3),2,3,byrow=TRUE) > a[index] [1] 1 22 as expected and documented. But what was the thinking behind the decision to access the array by rows rather than

[Rd] array indexing

2008-12-05 Thread Robin Hankin
Hi. I have been pondering array indexing via matrices. > a <- array(1:27,rep(3,3)) > index <- matrix(c(1,1,1,1,2,3),2,3,byrow=TRUE) > a[index] [1] 1 22 as expected and documented. But what was the thinking behind the decision to access the array by rows rather than columns? The 'index' mat