Hello,

I'm Michela and I'm working with the aCGH package (version 1.12.0) and R
version 2.6.0..

 

I have a problem when I run the impute.lowess function with more than 3
arrays:

 

Error in if (kb >= chrominfo$centromere[chr]) median(vec[clones.info$Chrom
==  : 

  The argument has length zero

 

I can't understand why the error comes only with more than 3 arrays!

 

I don't have the problem if I imputing the log2ratios using HMM:

 

hmm(arrays.acgh) <- find.hmm.states(arrays.acgh, aic = TRUE, 

  delta = 1.5)

log2.ratios.imputed(arrays.acgh)<-impute.HMM(arrays.acgh,  

  chrominfo=clones.info, maxChrom=22)

 

 

Someone explain me why this?

 

Thanks a lot

Michela 

 


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