?scale

HTH,
Jorge


On Sun, May 30, 2010 at 12:20 AM, Philip Wong <> wrote:

>
> what command to use to standardize my data to mean = 0, and SD=1.
> the data I want to standardize/centroid is in column format.
>
> So I'm thinking of using:
> col.mean.stdised=apply(data.df,2,function(z){z-mean(z)})
>
> but, what command should I use to put my SD =1?
> Thanks!
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