Hello, I have a strange problem. I may have specified and scanned the data set (I receive a message: Read 384134 items). I can check the dimension of the data set by dim(xyz). But when I try to load the data set or to list the data set by data(xyz), then I receive an error message saying that data set not found in: data(xyz). Is this possible, or is this because I deal with a large data set (dimension is 13246 x 29). I can not run any package with this data set. I am guessing that this is because of the same reason that I can not load/list the data set. Are reading data and loading data are different? I am very puzzled. Sincerely, Yoko. [[alternative HTML version deleted]]