Dear all, I want to parse BAR-files from Affymetrix. http://www.affymetrix.com/support/developer/powertools/changelog/gcos- agcc/bar.html Crawling through the internet I often read that affxparser is able to read BAR-files. However, I don't find any evidence for that in the Vignette. Any help would be appriciated. Regards, Philippe

On Mon, Jul 13, 2009 at 1:14 PM, Philippe Thomas < philippe.thomas.tcri@gmail.com> wrote: > Dear all, > > I want to parse BAR-files from Affymetrix. > http://www.affymetrix.com/support/developer/powertools/changelog /gcos-agcc/bar.html > > Crawling through the internet I often read that affxparser is able to read > BAR-files. However, I don't find any evidence for that in the Vignette. > I didn't see BAR file parsing functionality in the affxparser package (but it is in the package description, I agree). You can, however, write a pretty simple little parser for this format using simple R commands. Open the file in binary mode and use readBin, stepping through the format description. It is not fast, but it works OK. Sean [[alternative HTML version deleted]]