R help - Jul 2009 - scale subset of data

Hi,

This should be an easy one, but I have some trouble formatting the data 
right

I'm trying to replace the column of a subset of a dataframe with the 
scaled data for that column of the subset

subset(rawdata, code== "foo", select = a) <- scale( subset(rawdata,
code== "foo", select = a) )

It returns:   could not find function "subset<-"

The scale command works individually and the subset command works 
individually.

Can someone help me format this command line correctly?

Thanks,

-N


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Hi,

On Jul 31, 2009, at 4:13 PM, Noah Silverman wrote:
> Hi,
>
> This should be an easy one, but I have some trouble formatting the  
> data
> right
>
> I'm trying to replace the column of a subset of a dataframe with the
> scaled data for that column of the subset
>
> subset(rawdata, code== "foo", select = a) <- scale(
subset(rawdata,
> code== "foo", select = a) )
>
> It returns:   could not find function "subset<-"
>
> The scale command works individually and the subset command works
> individually.
>
> Can someone help me format this command line correctly?
How about:

rawdata[rawdata$code=='foo', 'a'] <- scale(rawdata[rawdata 
$code=='foo', 'a'])

-steve

--
Steve Lianoglou
Graduate Student: Computational Systems Biology
   |  Memorial Sloan-Kettering Cancer Center
   |  Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact