Bill Harris wrote: > Can anyone reproduce his result, perhaps using LAPACK? I do read > that people tend to find principal eigenvectors using a power method, > which only returns the principal eigenvector, but I neither see that > in my skimming of the LAPACK docs nor do I (yet) know why it's better > to go that way than to find them all, assuming it's not > computationally costly to find them all.
I've not used LAPACK much myself. However: in the general case it is costly to find all eigenvectors. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
