Hello, I would like to convert a Binary CEL file to txt file, which has same strunktur as version 3 in HG_U133 CEL files (charachter File). The result muss a table with "probe set name", "probe number", "intensity" and "mean". I read with ReadAffy CEL file: data.raw <- ReadAffy(filenames="H:/Profile/Eigene Dateien/Dip_bak/Pr_sprach/R/ME_cel/SZ_K1_230305.CEL") after this I try the table produce: data.exprs <- exprs(data.raw) data.out <- cbind(data.exprs, 0) write.table(data.out, file="./R/ME_data/SZ_K1_230305.TXT", sep="\t", col.names=NA, quote=FALSE) but I cannot to defined correctly entire table as unten: [INTENSITY] NumberCells=506944 CellHeader=X Y MEAN STDV NPIXELS 0 0 90.0 15.8 25 1 0 5241.0 899.8 25 What can I do? Thnaks, Mohammad