[R] help

[Alberto Goldoni]

Dear Mahalakshmi,
the simplest way to do this and to avoid your error is to open R
directtly for the folder in which there are your .CEL files and then:

data<-ReadAffy() #read all the .CEL files in the working director

data.rma<-rma(data) #in order to use rma on your .CEL files

hope helps

2010/3/4 mahalakshmi sivamani <mahasiva1987 at gmail.com>:
> Hi all ,
>
> I have one query.
>
> i have list of some  .cel files. in my program i have to mention the path of
> these .cel files
>
> part of my program is,
>
> rna.data<-exprs(justRMA(filenames=file.names, celfile.path=*datadir*,
> sampleNames=sample.names, phenoData=pheno.data,
> cdfname=cleancdfname(hg18_Affymetrix U133A)))
>
>
> in the place of "datadir" i have to mention the character string of the
> directory of these .cel files. I don't know how to give the path for all
> these files.
>
> i set the path as given below,
>
>
>> rna.data<-exprs(justRMA(filenames=file.names, celfile.path="*D:/MONO1.CEL"
> "D:/MONO2.CEL" "D:/MONO3.CEL" "D:/MACRO1.CEL" "D:/MACRO2.CEL"
> "D:/MACRO3.CEL"*,sampleNames=sample.names, phenoData=pheno.data,
> cdfname=cleancdfname(hg18_Affymetrix U133A)))
>
>
> it shows this error,
>
> Error: unexpected string constant in
> "rna.data<-exprs(justRMA(filenames=file.names, celfile.path="D:/MONO1"
> "D:/MONO2""
>
>
> could u please help me in this case.
>
>
> Thanks in advance.
>
>
> with regards,
>
> S.Mahalakshmi
>
>        [[alternative HTML version deleted]]
>
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>



-- 
-----------------------------------------------------
Dr. Alberto Goldoni
Bologna, Italy