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...but i only find R can done principle component regression using "pls" package, is there any package that can do the task i need - logistic regression based on principle components, if not, can anyone give some suggestion about how to use R to do my work. Thanks very much! best regards! wenkai _________________________________________________________________ [[elided Hotmail spam]]

Hi useRs, I have a set of fortran code that was passed down from previous students, and I am converting its algorithm into R codes. I encounter this function in Fortran (D)QDAWO, which numerically integrates a function f with a user-specified cosine or sine weight. It is used because the original function that I want to integrate is f(x)*cos(x). I tried in R to directly integrate by