[BioC] [lumi] methylumIDAT : probleme to read idat files

[Dylan Aïssi [guest]]

Dear all,
I get the following error when I try to load IDAT files with function methylumIDAT:

> lumi450k<-methylumIDAT(barcodes,getwd())
0 HumanMethylation27 samples found
24 HumanMethylation450 samples found
Error in function (classes, fdef, mtable)  : 
  unable to find an inherited method for function "pData<-", for signature "MethyLumiSet", "character"
> traceback()
4: stop("unable to find an inherited method for function \"", fdef at generic, 
       "\", for signature ", cnames)
3: function (classes, fdef, mtable) 
   {
       methods <- .findInheritedMethods(classes, fdef, mtable)
       if (length(methods) == 1L) 
           return(methods[[1L]])
       else if (length(methods) == 0L) {
           cnames <- paste("\"", sapply(classes, as.character), 
               "\"", sep = "", collapse = ", ")
           stop("unable to find an inherited method for function \"", 
               fdef at generic, "\", for signature ", cnames)
       }
       else stop("Internal error in finding inherited methods; didn't return a unique method")
   }(list("MethyLumiSet", "character"), function (object, value) 
   standardGeneric("pData<-"), <environment>)
2: `pData<-`(`*tmp*`, value = "C:/Documents and Settings/DylanA/Desktop/samples")
1: methylumIDAT(barcodes, getwd())

Anyone have a solution?
Thank you.

Dylan

 -- output of sessionInfo(): 

R version 2.14.1 (2011-12-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252    LC_MONETARY=French_France.1252
[4] LC_NUMERIC=C                   LC_TIME=French_France.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] BiocInstaller_1.2.1                   matrixStats_0.4.3                    
 [3] R.methodsS3_1.2.1                     IlluminaHumanMethylation450k.db_1.4.6
 [5] org.Hs.eg.db_2.6.4                    RSQLite_0.11.1                       
 [7] DBI_0.2-5                             AnnotationDbi_1.16.15                
 [9] methylumi_2.0.13                      Biobase_2.14.0                       

loaded via a namespace (and not attached):
[1] annotate_1.32.1 grid_2.14.1     IRanges_1.12.6  lattice_0.20-0  tools_2.14.1    xtable_1.7-0  

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