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Andreas Heider
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340
@andreas-heider-4538
Last seen 9.7 years ago
Hi bioconductor mailing list,
I got a (another) problem with redundant probesets from Affymetrix
chips:
For my downstream analysis to work, I need only 1 expression value per
gene
(eg Entrez Id).
So by now I have a table that looks something like this:
N probe set gene id expression 1 *12345_at* *123* 1.5 2 123456_at
1234 2
3 *1234567_at* *123* 1.6 4 12345678_at 12345 4 5 *123456789_at*
*123* 1.4
By collapsing I mean as a result something like this:
N probe set gene id expression
1 *12345_at* *123* *1.5* <= eg median 2 123456_at 1234 2
4 12345678_at 12345 4
I hope one can help me out! I have seen this in several publications,
so
there must be a way.
Thanks in advance, Andreas Heider
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