Hi The problem with rda() and getting some result like: Regularization parameters:> NULLmay be related to the package ?agricolae? as when I load it, rda() fails to produce a plot. To solve, quit R and re-start it. This time, do not load ?agricolae?. Regards Hadi ?? ?????? ??????? Department of Fisheries Faculty of Natural Resources University of Tehran Postal code 31587-77871 Karaj Iran [[alternative HTML version deleted]]