On Feb 4, 2009, at 11:00 AM, josef.p...@gmail.com wrote: > I just had a hard to find bug in my program. poly1d treats numpy > scalars differently than python numbers when left or right > multiplication is used. > > Essentially, if the first term is the numpy scalar, multiplied by a > polynomial, then the result is an np.array. > If the order is reversed, then the result is an instance of np.poly1d. > The return types are also the same for numpy arrays, which is at least > understandable, although a warning would be good) > > When using plain (python) numbers, then both left and right > multiplication of the number with the polynomial returns a polynomial. > > Is this a bug or a feature? I didn't see it mentioned in the docs.
Looks like yet another example of ticket #826: http://scipy.org/scipy/numpy/ticket/826 This one is getting quite a problem, and I have no idea how to fix it... _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
