I've done plenty of preprocessing, just for the sake of statistical methods, but right now I find myself being rather illiterate when it comes to finding out about specific genes. I gather I have to use something like get(<myfavoritegene_name>, revmap(<description_of_array>)) but unfortunately I'm blanking on the details. It would be great to get some help. Specifically, what to use to describe the array I'm using In this instance, I need this for both the old and the new version of Affy's drosophila gene expression array, but if you could just point me into the direction where to find those names for whichever chip and any associated libraries or files I need. Many thanks for any clues. Julia -- output of sessionInfo(): get(<myfavoritegene_name>, revmap(<description_of_array>)) -- Sent via the guest posting facility at bioconductor.org.

Hi Julia, I have written a vignette specifically for folks like you who are getting started using annotations. You can find it here: www.bioconductor.org/packages/2.11/bioc/vignettes/AnnotationDbi/inst/d oc/IntroToAnnotationPackages.pdf Hope this helps, Marc On 12/11/2012 02:06 PM, Julia Brettschneider [guest] wrote: > I've done plenty of preprocessing, just for the sake of statistical methods, but right now I find myself being rather illiterate when it comes to finding out about specific genes. > > I gather I have to use something like > get(<myfavoritegene_name>, revmap(<description_of_array>)) > but unfortunately I'm blanking on the details. > It would be great to get some help. > > Specifically, what to use to describe the array I'm using > In this instance, I need this for both the old and the new version of Affy's drosophila gene expression array, but if you could just point me into the direction where to find those names for whichever chip and any associated libraries or files I need. > > Many thanks for any clues. > Julia > > > -- output of sessionInfo(): > > get(<myfavoritegene_name>, revmap(<description_of_array>)) > > -- > 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

Hi Marc, that looks terrific indeed! I'm looking the details right now to figure out whether that all applies to drosophila or is just for human. Many thanks, Julia