[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

ryszard.czerminski at pharma.novartis.com 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 <GPetris at uark.edu>
>10/24/2003 02:50 PM
>Please respond to Giovanni Petris
>
> 
>        To:     Ryszard Czerminski/PH/Novartis at PH
>        cc:     r-help at stat.math.ethz.ch
>        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.
>
>  
>