numpy.polynomial.chebyshev.Chebyshev — NumPy v2.2 Manual (original) (raw)

class numpy.polynomial.chebyshev.Chebyshev(coef, domain=None, window=None, symbol='x')[source]#

A Chebyshev series class.

The Chebyshev class provides the standard Python numerical methods ‘+’, ‘-’, ‘*’, ‘//’, ‘%’, ‘divmod’, ‘**’, and ‘()’ as well as the attributes and methods listed below.

Parameters:

coefarray_like

Chebyshev coefficients in order of increasing degree, i.e.,(1, 2, 3) gives 1*T_0(x) + 2*T_1(x) + 3*T_2(x).

domain(2,) array_like, optional

Domain to use. The interval [domain[0], domain[1]] is mapped to the interval [window[0], window[1]] by shifting and scaling. The default value is [-1., 1.].

window(2,) array_like, optional

Window, see domain for its use. The default value is [-1., 1.].

symbolstr, optional

Symbol used to represent the independent variable in string representations of the polynomial expression, e.g. for printing. The symbol must be a valid Python identifier. Default value is ‘x’.

New in version 1.24.

Attributes:

symbol

Methods