mva.pairs

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Hi Vijay,
Hello,

 I am using the following code to plot an MVA plot.

 library(affy)
 library(Biobase)
 library(limma)
 library(gcrma)

     pd<-read.phenoData("Clk.targets.2.txt",header=TRUE,
     row.names=1,as.is=TRUE,sep="\t")
     Data <- ReadAffy(filenames=pData(pd)$FileName,phenoData=pd) 
     Print(Data)

     eset <- gcrma(Data) 
     write.exprs(eset, file="clk.6-23-05.txt")

     bitmap("clk-1.mva.jpg",width=15, height=12)
     mva.pairs(exprs(eset)[,c(19,20,21,22,23,24)],log.it=FALSE)
     dev.off()

 but I am getting an subscript out of bound error.

 Any Idea ?
The only reason I know for getting a subscript out of bound error is 
actually trying to subset an object using dimensions larger than the 
object itself. In other words, do you really have 24 columns (e.g., 24 
chips) in your exprSet?

 Thanks,

 Vijay

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