[R] a question related to clustering
gunter.berton at gene.com
Thu Mar 23 00:49:27 CET 2006
Sounds like you should go to the Bioconductor website
http://www.bioconductor.org/ and get plugged into their extensive and
professionally written software instead of shaking and baking your own.
-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
"The business of the statistician is to catalyze the scientific learning
process." - George E. P. Box
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Li,
> Aiguo (NIH/NCI) [C]
> Sent: Wednesday, March 22, 2006 2:16 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] a question related to clustering
> Hello all,
> I have a fundamental question to ask related to clustering. As you
> know, when we do statistic analysis, such as t-test, or anova, we like
> to log transform our data to make it normally distributed.
> My question
> is shall we use signal intensity of affy chips to cluster or use log
> transformed data. The Dendrogram profiles are certainly
> different when
> comparing two type of the data.
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