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. |
