Use affxparser or affyio to read the CEL files - way better than convert binary CELs to text and then use obsolete parser to read them. Cheers Henrik On Tue, Jun 24, 2008 at 8:54 AM, Matthew McCormack <mccormack at="" molbio.mgh.harvard.edu=""> wrote: > You might want to try *CEL File Conversion* Tool found at > http://www.affymetrix.com/support/developer/tools/devnettools.affx. > This is used to . .. "convert all Affymetrix CEL files in a specified > directory from version 3 format (ASCII - MAS 5 compatible format) _to > and from_ version 4 format (binary - GCOS compatible format). You files > may be version 4. If you convert them to version 3, you may have what > you want. It is also possible to convert back to version 4 after some > processing. > > Matthew McCormack > > > James W. MacDonald wrote: >> Hi AA, >> >> A A wrote: >>> Hello Everyone, >>> >>> I am very new to using R and Bioconductor, so please bare with me. I >>> have Affymetrix files that are in CEL format and i am trying to >>> convert them into text files so that I can work with them. I have >>> been trying to use the command justSNPRMA, but I am not sure what to >>> do after I run the command. I tried searching on the net to see if >>> there were step-by-step instructions for doing this, but I have not >>> been successful. Would someone direct me to such a site or explain >>> this process to me? >> >> You might want to look at the posting guide, as this message fails to >> meet even the minimum requirements. Some questions for you: >> >> 1.) What kind of Affymetrix files? >> >> 2.) What does 'work with them' mean? >> >> 3.) What (exact) code have you tried? >> >> 4.) What is your output from sessionInfo()? >> >> 5.) Who are you (anonymous questions are less likely to be answered)? >> >> Best, >> >> Jim >> >> >>> >>> Thanks, >>> >>> AA >>> >>> _________________________________________________________________ >>> [[elided Hotmail spam]] >>> >>> ntrosrchcashback [[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 >> > > [[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 >