I belive that
apply(t(mat),2,rev)
[,1] [,2] [,3]
[1,] 1 6 3
[2,] 2 2 5
[3,] 1 3 4
will do what you want. I'll leave it up to you to decide
whether it's straightforward.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Thu, 18 Mar 2010, dc896148 wrote:
useR's,
I want to be able to rotate a matrix 90 degrees, clockwise. For example,
mat
[,1] [,2] [,3]
[,1] 1 2 1
[,2] 3 2 6
[,3] 4 5 3
I want to rotate it, so that it looks like this...
[,1] [,2] [,3]
[,1] 4 3 1
[,2] 5 2 2
[,3] 3 6 1
Does anyone know a quick and straightforward way to do this?
Thanks in advance.
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