[BioC] tuning signals in image() plots? (fwd)

[w.huber at dkfz-heidelberg.de]

Hi Anna,

you can use the parameter "transfo" of the image function. If you set this
parameter to be a function like "log" or "rank", this will tune up the
lower-level signals correspondingly. See getMethods("image").

Best regards
  Wolfgang.

-------------------------------------
Wolfgang Huber
Division of Molecular Genome Analysis
German Cancer Research Center
Heidelberg, Germany
Phone: +49 6221 424709
Fax:   +49 6221 42524709
Http:  www.dkfz.de/mga/whuber
-------------------------------------

On Thu, 14 Aug 2003, Anna Gustafsson wrote:

> Hi,
>
> I wonder if there is a function in the affy package that allows the raw signals from .cel files to be "tuned" up when making image() plots?
> (As you probably know, some aberrations are not visible unless one turn up brightness of signals...MAS 5.0 software has this function - but I rather do everything in R.)
>
> Best regards!
> Anna :o)
>
> *******************************************************************************************
> Anna Gustafsson
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> Royal Institute of Technology
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> Stockholm Center for Physics, Astronomy and Biotechnology
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