[BioC] finding affy_ID from genesymbol

Steffen Durinck sdurinck at ebi.ac.uk
Thu Aug 11 11:47:57 CEST 2005

Hi Andreas,

You could have a look at the biomaRt package (take the version from 
developmental packages).

You'll need the following commands:

affyID <- getFeature(symbol="P53", array="hgu95av2",mart=mart)

To see which affy arrays are available do:



Andreas Zankl wrote:

>I am trying to adapt the limma-package volcanoplot so that the user 
>can specify a list of genesymbols that get labeled in the plot. To do 
>this, I have to convert from genesymbol to affy_ID, to find the right 
>spot in the fit object. Is there a function to convert from 
>genesymbol to affy_ID? Is there another way to do this?

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