The short answer is the current version of RMAExpress only supports 3' expression arrays and also the newer Exon arrays. Tiling array data is not currently supported. Ben On Sun, 2007-07-08 at 18:52 -0500, Mingqi Wu wrote: > Dear All, > > I am new to RMAexpress. I am trying to use RMAExpress to normalize CEL > data file from Affymetrix GeneChip microarrays. > > I have installed RMAExpress 0.5 on my windows XP, however I met 2 problem: > > 1. I can not load CEL file: File -> Read Unprocess Files -> CDF files > (there is only one option for CDF file, no CEL option) > > 2. I tried to convert the CEL file with RMADataConv. I first choose CEL > File Dir, then set Output dir and choose Convert, it always saying could > not read CEL file. > > By the way, I use a public CEL file from following link: > > http://transcriptome.affymetrix.com/publication/tfbs/ > > *Transcription Factor Binding Sites Data* > > * Raw CEL Data > > <http://transcriptome.affymetrix.com/download/publication/tfbs_data/intensity/cel.tgz>. > > > > Could you give me some help? is the data problem or RMAexpress prolbem? > > Thank you so much. > > Sincerely, > ----------- > Mingqi Wu > Email: mqwu@xxxxxxxxxxxxx >