[BioC] DNAcopy package, craeting CNA object

Sean Davis sdavis2 at mail.nih.gov
Tue Sep 11 15:08:29 CEST 2007

jhs1jjm at leeds.ac.uk wrote:
> Hi, I'm using R 2.5.0 on openSUSE 10.2 x86_64.
> I'm using some agilent CGH data from 3 arrays. I'm trying to create the CNA
> object. I've read the agilent data in using the marray package and created the
> marrayRaw and marrayNorm objects. I'm unsure of what to use for the chromosome
> and and maploc arguments in the DNAcopy package as follows:
> Useage:
> CNA(genomdat, chrom, maploc, data.type=c("logratio","binary"),
>                  sampleid=NULL)
> So far i'm guessing what i'd write would be something like:
> CNA.object <- CNA(cbind (mraw$maLG,mraw$maRG), chrom, maploc,
> data.type=c("logratio","binary"),
>                  sampleid=NULL)

You'll need to read the help for CNA().  It explains in some detail what
needs to be supplied.  In particular, you will need to supply a matrix
of ratios for genomedat.  Your datatype will be logratio.  For chrom and
maploc, you will need to determine that for the array that you are using.

If you need more guidance, you will probably want to supply the code
that you used, the errors that you received when you ran the code, and
sessionInfo() when you get the error.


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