Hi Bioconductors, I'm having problems in NormalizationWithinArrays function, method = "printtiploess". I wrote yesterday, but I still couldn't find any solutions. > MA <- normalizeWithinArrays (RG) Error in switch(method, loess = { : printer layout information does not match M row dimension My input is a .csv file generated by ScanArray Express software. I'm working with a PFGRC (Tigr Institute) Trypanosoma cruzi version 2 oligo slide. My RG$printer information: > RG$printer $ngrid.r [1] 12 $ngrid.c [1] 4 $nspot.r [1] 23 $nspot.c [1] 24 attr(,"class") [1] "PrintLayout" Thanks for you help and Nice Holidays. Priscila -- Priscila Grynberg, B.Sc., M.Sc. Doutoranda em Bioinformática (Bioinformatics D.Sc student) Laboratório de Genética Bioquímica Universidade Federal de Minas Gerais Tel: +55 31 3409-2628 CV: http://lattes.cnpq.br/8808643075395963 [[alternative HTML version deleted]]