Polynomial Module (numpy.polynomial.polynomial)
New in version 1.4.0.
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 Polynomial 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. |
