Dear all,
I start working in system biology. I have some problem for dataset analysis. I have two different microarray data from two different affymetrix chip. I need to compare data together, and how could I matc them? each data has special prob Id. How could I convert one of them to another??
thanks a lot
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written
by
eisa_kohan •
1 answer
(this question should not be in Chip-Seq, this is Microarrays)
Which Arabidopsis Affymetrix chips are you trying to compare between? You probably need to find a table for each which maps probe ID to AGI code (gene ID) for both chips. For the ATH chip, I use a table I downloaded from TAIR (somewhere in the bulk data download ftp server) a long time ago, affy_ATH1_array_elements-2010-12-20.txt, and then I have a function written in R to convert lists.
Alternatively, you if only have a few lists you can use an online converter, for instance the one at the eFP browser, http://bar.utoronto.ca/welcome.htm .
Some more information may help.
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