Eric Moore <ewm at redtetrahedron.org> wrote: > You have to do it by hand in numpy 1.6. For example see > <a > href="https://github.com/scipy/scipy/blob/master/scipy/signal/lfilter.c.src#L285-L292">https://github.com/scipy/scipy/blob/master/scipy/signal/lfilter.c.src#L285-L292</a> Thank you :) Sturla