python - Why is Numpy inconsistent in ordering polynomial coefficients by degree?

Question

numpy.polynomial.polynomial.Polynomial stores polynomial coefficients in order of increasing degree, while numpy.poly1d stores polynomial coefficients in order of decreasing degree.

Is there a reason for this difference? Is there an advantage to either approach?

Answer 1

根据NumPy 上的 SciPy 参考：

在 NumPy 1.4 之前，numpy.poly1d 是首选类，它仍然可用以保持向后兼容性。但是，较新的 Polynomial 包比 numpy.poly1d 更完整，并且其便利类在 numpy 环境中表现更好。因此建议将多项式用于新编码。