On Fri, Apr 19, 2002 at 08:09:59AM -0700, Dennis P. Wall wrote: > Dear Dr. Laurent, > > > I recently found your very helpful affy package and preprocessed HU_95A > CDF file. I am confused about how to use the cdf file with the CEL file > to generate expression data. I keep getting the message "Error in > read.cdf file (CDF file, compress = compress.cdf) : The specified file > does not appear to be a CDF file." Do you know how to avoid such an > error? > > I sincerely appreciate your help. > > > Best, > > > > Dennis Dear Dr. Dennis, Thanks for your comments and for reporting the problem. This error message is usually generated when then given file is not a CDF file. or when trying to read a compressed file while the flag 'compress' is set to FALSE (or the contrary). Does this help ? L. -------------------------------------------------------------- Laurent Gautier CBS, Building 208, DTU PhD. Student D-2800 Lyngby,Denmark tel: +45 45 25 24 85 http://www.cbs.dtu.dk/laurent