Below is a work around for this limitation by importing the latest annotations from the TAIR ftp site and querying the resulting data frame: # Online import ATdesc <- read.delim("ftp://ftp.arabidopsis.org/home/tair/Microarrays/ Affymetrix/affy_ATH1_array_elements-2006-04-05.txt", na.strings = "", fill=TRUE, header=T, sep="\t") # Retrieving the relevant columns ATdesc <- ATdesc[,c(1,5,6)] # Example for retrieving the descriptions for the AffyIDs: 253031_at and 253032_at myquery <- c("253031_at", "253032_at") ATdesc[ATdesc[,1] %in% myquery, ] Thomas On Tue 06/13/06 12:05, John Zhang wrote: > > > > >I am trying to use R for Arabidopsis data , but I can't get the genes > >annotation correctly, I am using : > > > >mget(AffyID[1:10], env = ath1121501GENENAME) > >Error in mget(AffyID[1:10], env = ath1121501GENENAME) : > > object "ath1121501GENENAME" not found > > > > > If you do ath1121501() you will see ath1121501GENENAME is not one of the > environments contained by the package. > > > > > > > >problem is env parameter. > >Thanks > >Afsaneh > > > >_______________________________________________ > >Bioconductor mailing list > >Bioconductor at stat.math.ethz.ch > >https://stat.ethz.ch/mailman/listinfo/bioconductor > >Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor > > Jianhua Zhang > Department of Medical Oncology > Dana-Farber Cancer Institute > 44 Binney Street > Boston, MA 02115-6084 > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor > -- Thomas Girke, Ph.D. 1008 Noel T. Keen Hall Center for Plant Cell Biology (CEPCEB) University of California Riverside, CA 92521 E-mail: thomas.girke at ucr.edu Website: http://faculty.ucr.edu/~tgirke Ph: 951-827-2469 Fax: 951-827-4437