[BioC] finding affy_ID from genesymbol

[Steffen Durinck]

Hi Andreas,

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

You'll need the following commands:

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

To see which affy arrays are available do:

getAffyArrays(mart)

best,
Steffen

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?
>
>Thanks
>Andreas
>  
>