OrthogonalUniVariateFunctionFamily

class OrthogonalUniVariateFunctionFamily(*args)

Base class for orthogonal univariate polynomial factories.

See also

StandardDistributionPolynomialFactory

Methods

build(order) Build the k-th order orthogonal univariate polynomial.
getClassName() Accessor to the object’s name.
getId() Accessor to the object’s id.
getImplementation(*args) Accessor to the underlying implementation.
getMeasure() Accessor to the associated probability measure.
getName() Accessor to the object’s name.
setName(name) Accessor to the object’s name.
__init__(*args)

x.__init__(…) initializes x; see help(type(x)) for signature

build(order)

Build the k-th order orthogonal univariate polynomial.

Parameters:

k : int, 0 \leq k

Polynomial order.
Returns:

polynomial : OrthogonalUniVariatePolynomial

Requested orthogonal univariate polynomial.

Examples

>>> import openturns as ot
>>> polynomial_factory = ot.HermiteFactory()
>>> print(polynomial_factory.build(2))
-0.707107 + 0.707107 * X^2
getClassName()

Accessor to the object’s name.

Returns:

class_name : str

The object class name (object.__class__.__name__).
getId()

Accessor to the object’s id.

Returns:

id : int

Internal unique identifier.
getImplementation(*args)

Accessor to the underlying implementation.

Returns:

impl : Implementation

The implementation class.
getMeasure()

Accessor to the associated probability measure.

Returns:

measure : Distribution

The associated probability measure (according to which the polynomials are orthogonal).

Notes

Two polynomials P and Q are orthogonal with respect to the probability measure w(x) \di{x} if and only if their dot product:

\langle P, Q \rangle = \int_{\alpha}^{\beta} P(x) Q(x) w(x)\di{x} = 0

where \alpha \in \Rset \cup \{-\infty\} and \beta \in \Rset \cup \{+\infty\}.

Examples

>>> import openturns as ot
>>> polynomial_factory = ot.HermiteFactory()
>>> print(polynomial_factory.getMeasure())
Normal(mu = 0, sigma = 1)
getName()

Accessor to the object’s name.

Returns:

name : str

The name of the object.
setName(name)

Accessor to the object’s name.

Parameters:

name : str

The name of the object.