Dear bioconductor: I input code as follow: >library(gcrma) >mydata<-ReadAffy(widget=TRUE) >eset_gcrma<-gcrma(mydata) then showing error: wrong on getCdfInfo(object) : Could not obtain CDF environment, problems encountered: Specified environment does not contain U133_X3Pa520049 Library - package u133x3pa520049cdf not installed Bioconductor - u133x3pa520049cdf not available Would you please tell me how to solve this problem? Thanks for your kind help. Attach is a cel file,thanks. Liuyang Zhao Chongqing Medical University

Hi Liuyang Zhao , On 10/9/2011 10:47 PM, liuyang zhao wrote: > Dear bioconductor: > > > I input code as follow: > >> library(gcrma) >> mydata<-ReadAffy(widget=TRUE) >> eset_gcrma<-gcrma(mydata) > then showing error: > > wrong on getCdfInfo(object) : > > Could not obtain CDF environment, problems encountered: Specified > environment does not contain U133_X3Pa520049 Library - package > u133x3pa520049cdf not installed Bioconductor - u133x3pa520049cdf not > available This doesn't appear to be a commercially available chip, so you will need to create a cdf package yourself, using the makecdfenv package. Please see the vignette for that package. library(makecdfenv) vignette("makecdfenv") Best, Jim > > > Would you please tell me how to solve this problem? > > Thanks for your kind help. > > > Attach is a cel file,thanks. > > > Liuyang Zhao > > Chongqing Medical University > > > _______________________________________________ > Bioconductor mailing list > Bioconductor@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 Douglas Lab University of Michigan Department of Human Genetics 5912 Buhl 1241 E. Catherine St. Ann Arbor MI 48109-5618 734-615-7826 ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues [[alternative HTML version deleted]]