7.1.6. numpy.polynomial.Polynomial¶
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class
numpy.polynomial.Polynomial(coef, domain=None, window=None)[source]¶ A power series class.
The Polynomial class provides the standard Python numerical methods ‘+’, ‘-‘, ‘*’, ‘//’, ‘%’, ‘divmod’, ‘**’, and ‘()’ as well as the attributes and methods listed in the ABCPolyBase documentation.
Parameters: coef : array_like
Polynomial coefficients in order of increasing degree, i.e.,
(1, 2, 3)give1 + 2*x + 3*x**2.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].
New in version 1.6.0.
7.1.6.1. Methods¶
__init__(coef[, domain, window]) |
|
basis(deg[, domain, window]) |
Series basis polynomial of degree deg. |
cast(series[, domain, window]) |
Convert series to series of this class. |
convert([domain, kind, window]) |
Convert series to a different kind and/or domain and/or window. |
copy() |
Return a copy. |
cutdeg(deg) |
Truncate series to the given degree. |
degree() |
The degree of the series. |
deriv([m]) |
Differentiate. |
fit(x, y, deg[, domain, rcond, full, w, window]) |
Least squares fit to data. |
fromroots(roots[, domain, window]) |
Return series instance that has the specified roots. |
has_samecoef(other) |
Check if coefficients match. |
has_samedomain(other) |
Check if domains match. |
has_sametype(other) |
Check if types match. |
has_samewindow(other) |
Check if windows match. |
identity([domain, window]) |
Identity function. |
integ([m, k, lbnd]) |
Integrate. |
linspace([n, domain]) |
Return x, y values at equally spaced points in domain. |
mapparms() |
Return the mapping parameters. |
roots() |
Return the roots of the series polynomial. |
trim([tol]) |
Remove trailing coefficients |
truncate(size) |
Truncate series to length size. |