On Wed, Dec 1, 2010 at 5:59 AM, Lorenzo Melchor
<lorenzo.melchor@icr.ac.uk>wrote:

> Hi there,
>
> I have been trying to use AffyQCReport for a few days now and I keep
> having the same problem again and again.
>
> I load the package with the usual library(affy) and
> library(affyQCReport) commands, so I type then the next command
> obtaining an error as a result.
>
>  > QCReport(test,file="qualityReport.pdf")
>
> Error in as.double(y) :
>   cannot coerce type 'S4' to vector of type 'double'
>
> When checking in my working directory, I find a pdf file with only the
> first two pages of any AffyQCReport.
>
> It seems odd because some other people at my centre has tried to do
> the same analysis, and got the same error.
>
> Would you know which the cause would be?
>
>
Hi, Lorenzo.

Can you give a reproducible example and sessionInfo()?

Sean

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