Hi to all, Could any one explain me how normalizeWithinArrays function works with spot format? I know that if I use the weight function wtarea(ideal=c(160,170)), all my spots between 160 and 170 will be 1 and all the rest down weighted. But I can't find any information (example) about how the normalization is performed. Thanks in advance -- Cumprimentos Henrique Proen?a