Polynomial Module (numpy.polynomial.polynomial)
This module provides a number of objects (mostly functions) useful for dealing with Polynomial series, including a Polynomial class that encapsulates the usual arithmetic operations. (General information on how this module represents and works with such polynomials is in the docstring for its “parent” sub-package, numpy.polynomial).
Polynomial Class
Polynomial(coef[, domain, window]) | A power series class. |
Basics
polyval(x, c[, tensor]) | Evaluate a polynomial at points x. |
polyval2d(x, y, c) | Evaluate a 2-D polynomial at points (x, y). |
polyval3d(x, y, z, c) | Evaluate a 3-D polynomial at points (x, y, z). |
polygrid2d(x, y, c) | Evaluate a 2-D polynomial on the Cartesian product of x and y. |
polygrid3d(x, y, z, c) | Evaluate a 3-D polynomial on the Cartesian product of x, y and z. |
polyroots(c) | Compute the roots of a polynomial. |
polyfromroots(roots) | Generate a monic polynomial with given roots. |
Fitting
polyfit(x, y, deg[, rcond, full, w]) | Least-squares fit of a polynomial to data. |
polyvander(x, deg) | Vandermonde matrix of given degree. |
polyvander2d(x, y, deg) | Pseudo-Vandermonde matrix of given degrees. |
polyvander3d(x, y, z, deg) | Pseudo-Vandermonde matrix of given degrees. |
Calculus
polyder(c[, m, scl, axis]) | Differentiate a polynomial. |
polyint(c[, m, k, lbnd, scl, axis]) | Integrate a polynomial. |
Algebra
polyadd(c1, c2) | Add one polynomial to another. |
polysub(c1, c2) | Subtract one polynomial from another. |
polymul(c1, c2) | Multiply one polynomial by another. |
polymulx(c) | Multiply a polynomial by x. |
polydiv(c1, c2) | Divide one polynomial by another. |
polypow(c, pow[, maxpower]) | Raise a polynomial to a power. |
Miscellaneous