[BioC] problem reading yeast data

[Laurent Gautier]

On Thu, Jan 23, 2003 at 03:34:16PM -0800, Lei Zhuge wrote:
> 
> Dear Bioconductor Staff:
> 
> I'm having a problem in reading yeast microarray data by R & Bioconductor.
> The error message is "The file xxx.CEL does not appear to be a CEL file."
> I have downloaded the yeast cdf package (ygs98cdf_0.1.zip) and installed
> it using the "install package" function from R menu. A possible problem
> with the data is that they were produced a long time ago (in the years of
> 1997 and 1998) so I wonder if a different cdf file is needed to interpret
> them. Could you please diagnose the problem and advise on the solution?

>From here, it looks like your CEL files are somehow strange. All the files
I have seen start with a line like '[CEL]' (that's what the parser is checking
and complains about). For further help, you may have to send one file
(or at least its first line).

(note: if your CEL files are compressed and the parameter 'compress' is
set to FALSE, you'd get theis error message too).


Hopin' it helps,


Laurent


> 
> Thank you.
> 
> Best regards,
> 
> Lei
> 
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