Dear aroma users/authors,
i am doing now Affy 6.0 SNP data analysis and my goal is to become BAF
values so that i can further use them with the method SOMATICS
I have not used from the very beginning the wrapper
ds <- doASCRMAv2("TumorProjekt", chipType="GenomeWideSNP_6");

but did all analysis steps explicitly,  actually 2 times: one with
argument  combineAlleles=FALSE and one with argument

As i understand it correctly, if i had object ds i could use ds$fracB
to become BAF.
I did not want to recalculate everything and started following:

dataSet <- "TumorProjekt";
tags <- "ACC,ra,-XY,BPN,-XY,AVG,FLN,-XY";
chipType <- "GenomeWideSNP_6";
ds <- AromaUnitFracBCnBinarySet$byName(dataSet, tags=tags,
dfTxt <- writeDataFrame(ds, columns=c("unitName",
"chromosome","position", "*"));

but become
Exception: None of the data directories exist: totalAndFracBData,
rawCnData, cnData, smoothCnData

What could be the reason for this?

When reporting problems on aroma.affymetrix, make sure 1) to run the latest 
version of the package, 2) to report the output of sessionInfo() and 
traceback(), and 3) to post a complete code example.

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