[BioC] selecting probe set from expression matrix

[James MacDonald]

exprs(rm.data)[c("217523_at", "212063_at","212014_x_at"),]

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
>>> Srinivas Iyyer <srini_iyyer_bio at yahoo.com> 02/25/05 5:43 PM >>>
dear list,

I generated expressions for a study in the following
way.

rm.data <- justRMA()
ex.data <- exprs(rm.data)

Now I want to select 217523_at, 212063_at,
212014_x_at. 

How can I select these probesets. 

> dim(data)
[1] 22283   158


2 question: how do I know data is which type of
object. 

thank you
srini

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