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.

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. > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor > -- James W. MacDonald, M.S. Biostatistician University of Washington Environmental and Occupational Health Sciences 4225 Roosevelt Way NE, # 100 Seattle WA 98105-6099