[R] Altering columns

[David Winsemius]

mat[ , 2:1]

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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David Winsemius, MD
Heritage Laboratories
West Hartford, CT