Isis::SurfaceModel Class Reference
[Math]

Model a 3-D surface. More...

Public Member Functions
	SurfaceModel ()
	Constructor.
	~SurfaceModel ()
	Destructor.
void	AddTriplet (const double x, const double y, const double z)
	Add a single (x,y,z) triplet to the list of knowns. After all knowns are added invoke the Solve method.
void	AddTriplets (const double x, const double y, const double *z, const int n)
	Add an array of (x,y,z) triplet to the list of knowns After all knowns are added invoke the Solve method.
void	AddTriplets (const std::vector< double > &x, const std::vector< double > &y, const std::vector< double > &z)
	Add an array of (x,y,z) triplet to the list of knowns After all knowns are added invoke the Solve method.
void	Solve ()
	Fit a surface to the input triplets.
double	Evaluate (const double x, const double y)
	Evaluate at x,y to compute z. This is available after the Solve method is invoked.
int	MinMax (double &x, double &y)
	After invoking Solve, a coordinate (x,y) at a local minimum (or maximum) of the surface model can be computed using this method.

Detailed Description

Model a 3-D surface.

Given a set of (x,y,z) triplets, this class will model the surface that best fits the points. The equation to be modelled is:

$z = a + b*x + c*y + d*x^2 + e*x*y + f*y^2$

Isis::SurfaceModel::SurfaceModel ( )

Constructor.

Isis::SurfaceModel::~SurfaceModel ( )

Destructor.

void Isis::SurfaceModel::AddTriplet	(	const double	x,
		const double	y,
		const double	z
	)

Add a single (x,y,z) triplet to the list of knowns. After all knowns are added invoke the Solve method.

void Isis::SurfaceModel::AddTriplets	(	const std::vector< double > &	x,
		const std::vector< double > &	y,
		const std::vector< double > &	z
	)

Add an array of (x,y,z) triplet to the list of knowns After all knowns are added invoke the Solve method.

void Isis::SurfaceModel::AddTriplets	(	const double *	x,
		const double *	y,
		const double *	z,
		const int	n
	)

Add an array of (x,y,z) triplet to the list of knowns After all knowns are added invoke the Solve method.

double Isis::SurfaceModel::Evaluate	(	const double	x,
		const double	y
	)

Evaluate at x,y to compute z. This is available after the Solve method is invoked.

int Isis::SurfaceModel::MinMax	(	double &	x,
		double &	y
	)

After invoking Solve, a coordinate (x,y) at a local minimum (or maximum) of the surface model can be computed using this method.

Returns:: A zero if successful, otherwise, the surface is a plane and has no min/max

void Isis::SurfaceModel::Solve ( )

Fit a surface to the input triplets.

The documentation for this class was generated from the following files: