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 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. |
polyvalfromroots (x, r[, tensor]) |
Evaluate a polynomial specified by its roots at points x. |
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
polycompanion (c) |
Return the companion matrix of c. |
polydomain |
|
polyzero |
|
polyone |
|
polyx |
|
polytrim (c[, tol]) |
Remove “small” “trailing” coefficients from a polynomial. |
polyline (off, scl) |
Returns an array representing a linear polynomial. |
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Licensed under the 3-clause BSD License.
https://docs.scipy.org/doc/numpy-1.14.5/reference/routines.polynomials.polynomial.html