Thanks for that. Donald -----Original Message----- From: Ben Bolstad [mailto:bolstad@stat.berkeley.edu] Sent: 20 August 2004 16:06 To: Donald Dunbar Cc: bioconductor@stat.math.ethz.ch Subject: Re: [BioC] Affy: pm and mm data from AffyID Try using something like pm(Data,"1001_at") or pm(Data,c("1001_at","1002_at")) etc. Ben On Fri, 2004-08-20 at 07:58, Donald Dunbar wrote: > Hello, > sorry if this is a RFTM, but after reading the Affy vignette a few > times, I can't find the answer, and I know it must be easy! > I've loaded the Affy library and read my chips into bioconductor. I've > no problem accessing PM and MM data by Index as shown in the vignette > (4.1 Accessing PM and MM Data), however I can't see how to access the > same data by AffyID. > Any help would be appreciated, > Donald > > ===================== > Dr Donald Dunbar > Bioinformatician > Molecular Physiology Group > Wilkie Building, Medical School, > The University of Edinburgh, EH8 9AG > t: +44 (0)131 651 1592 > e: Donald.Dunbar@ed.ac.uk > > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor -- Ben Bolstad <bolstad@stat.berkeley.edu> http://www.stat.berkeley.edu/~bolstad

An other option is to go through the class ProbeSet. mypps <- probeset(abatch, probeid) lapply(mypps, function(x) x@pm) lapply(mypps, function(x) x@mm) L. James MacDonald wrote: > Use the pm() accessor function. > > pm(abatch, probeid) > mm(abatch, probeid) > > > HTH, > > Jim > > > James W. MacDonald > Affymetrix and cDNA Microarray Core > University of Michigan Cancer Center > 1500 E. Medical Center Drive > 7410 CCGC > Ann Arbor MI 48109 > 734-647-5623 > > >>>>"Donald Dunbar" <donald.dunbar@ed.ac.uk> 08/20/04 10:58AM >>> > > Hello, > sorry if this is a RFTM, but after reading the Affy vignette a few > times, I > can't find the answer, and I know it must be easy! > I've loaded the Affy library and read my chips into bioconductor. I've > no > problem accessing PM and MM data by Index as shown in the vignette > (4.1 > Accessing PM and MM Data), however I can't see how to access the same > data > by AffyID. > Any help would be appreciated, > Donald > > ===================== > Dr Donald Dunbar > Bioinformatician > Molecular Physiology Group > Wilkie Building, Medical School, > The University of Edinburgh, EH8 9AG > t: +44 (0)131 651 1592 > e: Donald.Dunbar@ed.ac.uk > > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor >