Chebyshev Module (numpy.polynomial.chebyshev)
New in version 1.4.0.
This module provides a number of objects (mostly functions) useful for dealing with Chebyshev series, including a Chebyshev
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
).
Chebyshev Class
Chebyshev (coef[, domain, window]) |
A Chebyshev series class. |
Basics
chebval (x, c[, tensor]) |
Evaluate a Chebyshev series at points x. |
chebval2d (x, y, c) |
Evaluate a 2-D Chebyshev series at points (x, y). |
chebval3d (x, y, z, c) |
Evaluate a 3-D Chebyshev series at points (x, y, z). |
chebgrid2d (x, y, c) |
Evaluate a 2-D Chebyshev series on the Cartesian product of x and y. |
chebgrid3d (x, y, z, c) |
Evaluate a 3-D Chebyshev series on the Cartesian product of x, y, and z. |
chebroots (c) |
Compute the roots of a Chebyshev series. |
chebfromroots (roots) |
Generate a Chebyshev series with given roots. |
Fitting
chebfit (x, y, deg[, rcond, full, w]) |
Least squares fit of Chebyshev series to data. |
chebvander (x, deg) |
Pseudo-Vandermonde matrix of given degree. |
chebvander2d (x, y, deg) |
Pseudo-Vandermonde matrix of given degrees. |
chebvander3d (x, y, z, deg) |
Pseudo-Vandermonde matrix of given degrees. |
Calculus
chebder (c[, m, scl, axis]) |
Differentiate a Chebyshev series. |
chebint (c[, m, k, lbnd, scl, axis]) |
Integrate a Chebyshev series. |
Algebra
chebadd (c1, c2) |
Add one Chebyshev series to another. |
chebsub (c1, c2) |
Subtract one Chebyshev series from another. |
chebmul (c1, c2) |
Multiply one Chebyshev series by another. |
chebmulx (c) |
Multiply a Chebyshev series by x. |
chebdiv (c1, c2) |
Divide one Chebyshev series by another. |
chebpow (c, pow[, maxpower]) |
Raise a Chebyshev series to a power. |
Quadrature
chebgauss (deg) |
Gauss-Chebyshev quadrature. |
chebweight (x) |
The weight function of the Chebyshev polynomials. |
Miscellaneous
chebcompanion (c) |
Return the scaled companion matrix of c. |
chebdomain |
|
chebzero |
|
chebone |
|
chebx |
|
chebtrim (c[, tol]) |
Remove “small” “trailing” coefficients from a polynomial. |
chebline (off, scl) |
Chebyshev series whose graph is a straight line. |
cheb2poly (c) |
Convert a Chebyshev series to a polynomial. |
poly2cheb (pol) |
Convert a polynomial to a Chebyshev series. |
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Licensed under the 3-clause BSD License.
https://docs.scipy.org/doc/numpy-1.16.1/reference/routines.polynomials.chebyshev.html