Hi, I tried with lars, but for a 29(n)x4662(p) dataset, I kept getting error. One is the program failed,giving out a message:"if (zmin < gamhat) {missing value where TRUE/FALSE needed", another problem, for leave one out cross validation with cv.lars, the program sometimes gives very large ridiculous prediction on omit sample(s). Anyone has similar problems? Thanks. [[alternative HTML version deleted]]