Dear Nikul, As Jim mentioned, you could use xps. You can find an example how to create the 'scheme' for MoGene 2.0 in ../xps/examples/script4schemes.R. However, first you would need to download the library and annotation files of MoGene 2.0 from the Affymetrix web-site. (Furthermore, please read the README file how to install ROOT first.) Best regards Christian _._._._._._._._._._._._._._._._._._ C.h.r.i.s.t.i.a.n S.t.r.a.t.o.w.a V.i.e.n.n.a A.u.s.t.r.i.a e.m.a.i.l: cstrato at aon.at _._._._._._._._._._._._._._._._._._ On 5/2/13 3:09 PM, James W. MacDonald wrote: > Hi Nikul, > > You won't be able to use the affy package to process these files. > Instead you can use either oligo or xps. As for the .db file, those > files are supplied by Arthur Li, and apparently he hasn't made them for > the 2.0 series. There is apparently a way to add the annotation to xps, > but you will have to either look at the help pages or vignettes or wait > for Christian Stratowa to chime in. > > You can also use the AnnotationForge package to create your own .db > file, but that is a relatively involved process, as the annotation data > from Affy are not that easy to parse. > > Best, > > Jim > > > > On 5/2/2013 6:55 AM, Nikul Soni wrote: >> Hi all, >> >> I am a beginner in R and i use R studio to analyse my mouse liver >> arrays. I >> am doing my micro array analysis and it misses cdf environment. I >> check all >> the database in R and i cant found for the new chip Mogene20 and its >> database i.e. its .db file. is there any possibility that i can >> download it >> from other sources. >> >> Regards >> Nikul >> >> >> >> _______________________________________________ >> 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 >