[BioC] extracting probe sets corresponding to a given gene

James W. MacDonald jmacdon at med.umich.edu
Mon Feb 20 17:16:02 CET 2006

Christos Hatzis wrote:
> Hi Jim,
> This is what I tried first, but I get an error:
> Error in get(x, envir, mode, inherits) : variable "ERS1" was not found
> I think "get" works in the reverse direction, i.e. to find a gene symbol
> that corresponds to a given probe set.  I actually needed the opposite, i.e.
> given a gene, find all the probe sets from that gene on the chip.

Hmmm. Maybe I need to take up drinking coffee ;-D

Anyway, what you want to do is really the reverse of what the 
environment is set up to do, so I think your solution is about as 
elegant as it gets.



> Thanks.
> -Christos

James W. MacDonald, M.S.
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109

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