Dear all, I encountered a problem in using the CDF file for Human Exon 1.0 ST microarray. I downloaded exon.pmcdf_1.1.tar.gz from http://xmap.picr.man.ac.uk/download/ and managed to install the package in R, but when I typed "library(exon.pmcdf)" I got the following error report: Error in library(exon.pmcdf) : 'exon.pmcdf' is not a valid package -- installed < 2.0.0? Does anybody have an idea what might be causing this problem? Best regards, - Essi Lahti [[alternative HTML version deleted]]

Hi Essi, Essi Lahti wrote: > Dear all, > > I encountered a problem in using the CDF file for Human Exon 1.0 ST > microarray. I downloaded exon.pmcdf_1.1.tar.gz from > http://xmap.picr.man.ac.uk/download/ and managed to install the package in > R, but when I typed "library(exon.pmcdf)" I got the following error report: > > Error in library(exon.pmcdf) : > 'exon.pmcdf' is not a valid package -- installed < 2.0.0? > > Does anybody have an idea what might be causing this problem? Yes. Although you don't give us much information and thus force us to guess(see the posting guide), this error usually means that: a.) You are using Windows. b.) When you say you 'managed to install' the package, what you mean is that you untarred the package in your library directory, which is not how you install things. Please see Windows FAQ 7.3 and/or the R Installation and Administration manual. Best, Jim > > Best regards, > > - Essi Lahti > > [[alternative HTML version deleted]] > > _______________________________________________ > 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 -- James W. MacDonald, MS Biostatistician UMCCC cDNA and Affymetrix Core University of Michigan 1500 E Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623