hi,
if you use affymetrix don't forget to remove AFFX probset.
So, you use affymetrix ?

Best,
Cherif


2014-06-27 15:07 GMT+01:00 James W. MacDonald <jmacdon@uw.edu>:

> This question isn't well specified. What exactly do you mean by
> 'annotation'? You don't say what array you are using either.
>
> In future you will be much better served by making your question as
> specific as possible. Otherwise you are expecting people to infer what you
> want, and you are less likely to get a response, let alone a correct
> response.
>
> If I take a guess and assume you mean something like annotation == 'has a
> Gene ID', then it is pretty simple.
>
> library(genefilter)
> subeset <- featureFilter(eset, require.entrez = TRUE, remove.dupEntrez =
> FALSE)
>
>
> Best,
>
> Jim
>
>
>
>
> On 6/26/2014 7:46 PM, Quan [guest] wrote:
>
>> Hi,
>>
>> I want to remove the probeset which do not have annotation in feature
>> before do the limma analysis.
>>
>> could anyone give suggestion on this problem using eset ?
>>
>> thank you
>> Quan
>>
>>   -- output of sessionInfo():
>>
>> hi
>>
>> --
>> Sent via the guest posting facility at bioconductor.org.
>>
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>>
> --
> James W. MacDonald, M.S.
> Biostatistician
> University of Washington
> Environmental and Occupational Health Sciences
> 4225 Roosevelt Way NE, # 100
> Seattle WA 98105-6099
>
>
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