[BioC] Filtering Affymetrix data. (Newbie)

[Rafael A. Irizarry]

and you can read the vignette. sections 4.1 and chapters 6 and 7 
have some info that may help.

-r
On Wed, 27 Aug 2003, James MacDonald wrote:

> You access the data by using the pm() and mm() functions.
> 
> For instance:
> 
> pm(abatch)[1:1000] <- 200
> 
> will replace the first 1000 pm values with 200.
> 
> HTH,
> 
> Jim
> 
> 
> 
> James W. MacDonald
> Affymetrix and cDNA Microarray Core
> University of Michigan Cancer Center
> 1500 E. Medical Center Drive
> 7410 CCGC
> Ann Arbor MI 48109
> 734-647-5623
> 
> >>> Marcus <marcusb at biotech.kth.se> 08/27/03 03:59AM >>>
> Hello all!!
> 
> How do I get access to the individual probe intensities in my data object 
> (which I get with the
> data<-ReadAffy() command) ?
> 
> I know that I can get them with the mm() and pm() functions but if I would 
> like to see,filter,remove or change the data in the data object, how is 
> this accomplished?
> 
> Essentially: How is the data object built up and how do you access it??
> 
> Another question: How and where is the background value stored/calculated??
> 
> /Marcus
> 
> *******************************************************************************************
> Marcus Gry Björklund
> 
> Royal Institute of Technology
> AlbaNova University Center
> Stockholm Center for Physics, Astronomy and Biotechnology
> Department of Molecular Biotechnology
> 106 91 Stockholm, Sweden
> 
> Phone (office): +46 8 553 783 39
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