On Sun, May 20, 2012 at 9:37 AM, Charles R Harris <charlesr.har...@gmail.com > wrote:
> > > On Sun, May 20, 2012 at 9:09 AM, Andreas Hilboll <li...@hilboll.de> wrote: > >> Hi, >> >> I just noticed that there's two polyfit functions, one in >> numpy.lib.polynomial, and one in numpy.polynomial. What's the reason for >> this? The calling signatures aren't identical (the numpy.polynomial >> version supports weights), and I couldn't find a notice on why two >> versions exist. >> >> > There are two different polynomial objects, Polynomial and poly1d. The > Polynomial object is part of a newer group that also contains Lengendre, > Chebyshev, etc., and doesn't have some of the problems that poly1d has. > Poly1d is an older implementation. > Oh, and the polyfit function in polynomial.polynomial isn't meant to be used directly, it is mostly there to support the fit class function of Polynomial. See the documentation here <http://preview.tinyurl.com/8289gfs>. Chuck
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