On Sun, Apr 18, 2010 at 10:21 AM, NUTAN CHAUHAN <nutanbt@yahoo.co.in> wrote:

> Dear Sir,
> i am doing work on microarray data analysis in R using Bioconductor. i have
> installed all the default packages and other required packages. when i
> used  "qc(myobject)" , i am getting the following error message:
>
> Error in setQCEnvironment(cdfn) :
>   Could not find array definition file ' drosophila2cdf.qcdef '. Simpleaffy
> does not know the QC parameters for this array type.
> See the package vignette for details about how to specify QC parameters
> manually.
>
>
Hi, Nutan.  So, did you find more errors when you read the package vignette
and specified the QC parameters manually, as the error message suggests?  If
so, please provide the code and the output of sessionInfo() so that folks
can be maximally helpful.

Sean

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