Hi list, I am trying to do some reordering-subsetting of a beadarray object (ExpressionSetIllumina) after having summarized the bead level data but I get an error, when I did the same in lumi it worked fine: >RC_sum ExpressionSetIllumina (storageMode: list) assayData: 26821 features, 8 samples ..... >RC[1,] ExpressionSetIllumina (storageMode: list) assayData: 1 features, 8 samples ..... >RC[,1] Error: subscript out of bounds > sessionInfo() R version 2.8.1 (2008-12-22) i386-pc-mingw32 locale: LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom.1252;LC_MONETARY=English_United Kingdom.1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252 attached base packages: [1] stats graphics grDevices datasets utils tools methods [8] base other attached packages: [1] beadarray_1.10.0 sma_0.5.15 hwriter_1.1 [4] geneplotter_1.20.0 annotate_1.20.1 xtable_1.5-5 [7] AnnotationDbi_1.4.3 lattice_0.17-17 limma_2.16.5 [10] Biobase_2.2.2 loaded via a namespace (and not attached): [1] DBI_0.2-4 grid_2.8.1 KernSmooth_2.22-22 RColorBrewer_1.0-2 [5] RSQLite_0.7-1 Any idea what could be wrong? Thanks a lot, Julien Bauer -- Julien Bauer Computational Biologist Microarray Resource Centre Pathology department-Cambridge University Tennis Court Road Cambridge CB2 1QP