The documentation is a little misleading --- if you look at lmfit/minimizer.py
, and do a string search for "redchi" in the entire file, it only appears once, and that is in the leastsq()
method. So basically, it only calculates the reduced chi squared for least-squares fitting.
If you're feeling up to it, you could add redchi
to the other methods in the appropriate places, fork the lmfit github repo, and commit your changes.