[BioC] Problem regardign ReadAffy()

James W. MacDonald jmacdon at med.umich.edu
Sun Jul 23 14:53:52 CEST 2006

Hi Nayeem,

Nayeem Quayum wrote:
> Hello everybody,
>         I was trying to load HGU133 data set in to bioconductor for some
> analysis. But I got an error. Any kind of help would be appreciated. The
> code is very simple
>  library(affy)
> Data <- ReadAffy()
> I invoked R from the directory where all the CEL files are resided. But I am
> getting the following error.
> Error in initialize(value, ...) : Cel file /home/dev/Desktop/temp/INF
> alpha/Exo_A_U133B.CEL does not seem to be of HG-U133A type

It would appear from the error message that you have a mixture of 133A 
and 133B chips in your working directory. Since these are different 
chips you cannot work with them simultaneously, hence the error.



> Thanks.
> 	[[alternative HTML version deleted]]
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James W. MacDonald
University of Michigan
Affymetrix and cDNA Microarray Core
1500 E Medical Center Drive
Ann Arbor MI 48109

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