#include <Parabola.h>

Inheritance diagram for Isis::Parabola:

Collaboration diagram for Isis::Parabola:

Public Member Functions
	Parabola (const QString &bname="Parabola")
	Create a Parabola object.

	~Parabola ()
	Destroys the Parabola object.

void	Expand (const std::vector< double > &vars)
	This is the the overriding virtual function that provides the expansion into the parabolic equation.

void	SetCoefficients (const std::vector< double > &coefs)
	Set the coefficients for the equation.

double	Evaluate (const std::vector< double > &vars)
	Compute the equation using the input variables.

int	Coefficients () const
	Returns the number of coefficients for the equation.

int	Variables () const
	Returns the number of variables in the equation.

QString	Name () const
	Returns the name of the equation.

double	Term (int c) const
	Returns the cth term.

double	Coefficient (int i) const
	Returns the ith coefficient.

Protected Attributes
QString	p_name
	The name of the equation. Call it by using Name()

int	p_numVars
	The number of variables in the equation. Call it by using Variables()

int	p_numCoefs
	The number of coefficients in the equation.

std::vector< double >	p_coefs
	A vector of the coefficients in the equation.

std::vector< double >	p_terms
	A vector of the terms in the equation.

Detailed Description

Parabola basis function.

This is a derived class from the BasisFunction class which creates a parabola (second degree equation in 1 variable). The parabolic function has the following form:

$x = A + B*y + C*y**2$

Author: 2005-06-09 Kris Becker

History:: 2006-04-15 Debbie A. Cook - Imported from ISIS2 to Isis 3

Definition at line 50 of file Parabola.h.

Constructor & Destructor Documentation

Isis::Parabola::Parabola ( const QString & bname = "Parabola" )

inline

Create a Parabola object.

Definition at line 56 of file Parabola.h.

Isis::Parabola::~Parabola ( )

inline

Destroys the Parabola object.

Definition at line 60 of file Parabola.h.

Member Function Documentation

double Isis::BasisFunction::Coefficient ( int i ) const

inlineinherited

Returns the ith coefficient.

Parameters

i	The index for the desired coefficient.

Returns: The ith coefficient

Definition at line 119 of file BasisFunction.h.

References Isis::BasisFunction::p_coefs.

Referenced by Isis::PolynomialUnivariate::DerivativeVar(), Isis::SpicePosition::LoadHermiteCache(), Isis::SurfaceModel::MinMax(), Isis::SpicePosition::SetPolynomial(), Isis::SpiceRotation::SetPolynomial(), Isis::Affine::Solve(), and Isis::BundleAdjust::Update().

int Isis::BasisFunction::Coefficients ( ) const

inlineinherited

Returns the number of coefficients for the equation.

Returns: The number of coefficients.

Definition at line 76 of file BasisFunction.h.

References Isis::BasisFunction::p_numCoefs.

Referenced by Isis::PolynomialUnivariate::DerivativeCoef(), Isis::PolynomialUnivariate::DerivativeVar(), Isis::SpicePosition::SetPolynomial(), Isis::SpiceRotation::SetPolynomial(), Isis::LeastSquares::SolveQRD(), and Isis::LeastSquares::SolveSVD().

double Isis::BasisFunction::Evaluate ( const std::vector< double > & vars )

inherited

Compute the equation using the input variables.

Parameters

vars	A vector of double values to use for the equation. After setting the coefficients, this can be invoked many times to compute output values given input values.