Re: [R] how to remove NaN columns ?

[Spencer Graves]

Have you considered the following: 

> x <- 1:11
> xs <- scale(x)
> xs
           [,1]
[1,] -1.5075567
[2,] -1.2060454
...
[11,]  1.5075567
attr(,"scaled:center")
[1] 6
attr(,"scaled:scale")
[1] 3.316625
> attr(xs, "scaled:center")
[1] 6
hope this helps.  spencer graves

[EMAIL PROTECTED] wrote:

Nice!

I noticed that in generated structure it has two attributes 
attr(,"scaled:center") and attr(,"scaled:scale")
How can I access them ? 

R





Giovanni Petris <[EMAIL PROTECTED]>
10/24/2003 02:50 PM
Please respond to Giovanni Petris
       To:     Ryszard Czerminski/PH/[EMAIL PROTECTED]
       cc:     [EMAIL PROTECTED]
       Subject:        Re: [R] how to remove NaN columns ?


 

xs <- lapply(xdata, function(x){(x - mean(x))/sqrt(var(x))})
     

Incidentally, the function 'scale' does just that.

 

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