A simple way to do it would be:
mat<-mat[,c(2,1)]
Slightly more fancy (for any number of columns):
mat<-mat[,dim(mat)[2]:1]
I'm sure there are prettier ways to do it.
-Jim
On Jun 18, 2009, at 4:14 PM, RON70 wrote:
Hi,
Suppose I have following dataset :
mat <- matrix(rnorm(100), 50)
Now I want to put 2nd column in the place of 1st and 1st column in
the place
of 2nd. Is there any "quick" way to do that?
Thanks and regards,
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