Hi, there: I have an idea and it needs to calculate "total correlation" for a set of variables, because I need to evalate how cohesive or related a group of variables are (If someone knows other ways to do that, please be advised! thanks!). After searching the archives and googling, I just two related functions entropy and entropy.joint while the latter only deals with two variables. So, I am wondering if I miss something here during my search (btw, I am not very good at searching so sometimes I posted some questions which are simple by searching). BTW, if there are functions not only dealing with discrete but also with continuous ones, it will be great ! thanks, -- Weiwei Shi, Ph.D Research Scientist GeneGO, Inc. "Did you always know?" "No, I did not. But I believed..." ---Matrix III