R help - Mar 2004 - scaling data for microarray

Hello All,

I am new to R and want to use R to scale my data
before analysis.  I need to do two fold scaling: a).
scale on a per object (chip) basis, scale to a mean of
0 and stddev to 1; b). scale on a per feature basis:
scale data linearly to the interval [0,1].

Could somebody help me with this?
Thanks a lot,

Jas

 

__________________________________

Jas,

You should look into using bioconductor (http://www.bioconductor.org), a
group of over 65 R packages for dealing with all aspects of microarray
analysis.  There are numerous functions in those packages dealing in
multiple ways with your problem.

Sean

On 3/3/04 11:10 PM, "Yan Li" <yantian2001 at yahoo.com> wrote:
> Hello All,
> 
> I am new to R and want to use R to scale my data
> before analysis.  I need to do two fold scaling: a).
> scale on a per object (chip) basis, scale to a mean of
> 0 and stddev to 1; b). scale on a per feature basis:
> scale data linearly to the interval [0,1].
> 
> Could somebody help me with this?
> Thanks a lot,
> 
> Jas
> 
> 
> 
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