casacore::HyperPlane< T > Class Template Reference

A hyper plane function. More...

#include <HyperPlane.h>

Inheritance diagram for casacore::HyperPlane< T >:

Public Member Functions
	HyperPlane (const uInt m=0)
	Construct an m-dimensional hyper plane which has m parameters. More...
	HyperPlane (const HyperPlane< T > &other)
	Copy constructor/assignment (deep copy) More...
template<class W >
	HyperPlane (const HyperPlane< W > &other)
HyperPlane< T > &	operator= (const HyperPlane< T > &other)
virtual	~HyperPlane ()
	Destructor. More...
virtual T	eval (typename Function< T >::FunctionArg x) const
	Evaluate the hyper plane function at (x0,x1,..,xm-1). More...
virtual Function< T > *	clone () const
	Return a copy of this object from the heap. More...
virtual Function< typename FunctionTraits< T >::DiffType > *	cloneAD () const
virtual Function< typename FunctionTraits< T >::BaseType > *	cloneNonAD () const
Public Member Functions inherited from casacore::HyperPlaneParam< T >
	HyperPlaneParam (uInt m=0)
	Construct an m-dimensional hyper plane which has m parameters. More...
	HyperPlaneParam (const HyperPlaneParam &other)
	Copy constructor (deep copy) More...
template<class W >
	HyperPlaneParam (const HyperPlaneParam< W > &other)
HyperPlaneParam< T > &	operator= (const HyperPlaneParam< T > &other)
	Copy assignment (deep copy) More...
virtual	~HyperPlaneParam ()
	Destructor. More...
Bool	operator== (const HyperPlaneParam< T > &other) const
	Comparisons. More...
Bool	operator!= (const HyperPlaneParam< T > &other) const
virtual const String &	name () const
	Give name of function. More...
virtual uInt	ndim () const
	What is the dimension of the parameter list. More...
Public Member Functions inherited from casacore::Function< T >
	Function ()
	Constructors. More...
	Function (const uInt n)
	Function (const Vector< T > &in)
	Function (const FunctionParam< T > &other)
	Function (const Function< W, X > &other)
virtual	~Function ()
	Destructor. More...
uInt	nparameters () const
	Returns the number of parameters. More...
virtual U	eval (FunctionArg x) const =0
	Evaluate the function object. More...
T &	operator[] (const uInt n)
	Manipulate the nth parameter (0-based) with no index check. More...
const T &	operator[] (const uInt n) const
virtual U	operator() () const
	Evaluate this function object at xor at x, y. More...
virtual U	operator() (const ArgType &x) const
virtual U	operator() (const Vector< ArgType > &x) const
virtual U	operator() (FunctionArg x) const
virtual U	operator() (const ArgType &x, const ArgType &y) const
virtual U	operator() (const ArgType &x, const ArgType &y, const ArgType &z) const
Bool &	mask (const uInt n)
	Manipulate the mask associated with the nth parameter (e.g. More...
const Bool &	mask (const uInt n) const
const FunctionParam< T > &	parameters () const
	Return the parameter interface. More...
FunctionParam< T > &	parameters ()
const Vector< ArgType > &	argp () const
	Get arg_p and parset_p. More...
Bool	parsetp () const
void	lockParam ()
	Compiler cannot always find the correct 'const' version of parameter access. More...
void	unlockParam ()
virtual void	setMode (const RecordInterface &mode)
	get/set the function mode. More...
virtual void	getMode (RecordInterface &mode) const
virtual Bool	hasMode () const
	return True if the implementing function supports a mode. More...
ostream &	print (ostream &os) const
	Print the function (i.e. More...
Public Member Functions inherited from casacore::Functional< FunctionTraits< T >::ArgType, U >
virtual	~Functional ()
	Destructor. More...
virtual U	operator() (const FunctionTraits< T >::ArgType &x) const =0
	Map a Domain x into a Range y value. More...
Public Member Functions inherited from casacore::Functional< Vector< FunctionTraits< T >::ArgType >, U >
virtual	~Functional ()
	Destructor. More...
virtual U	operator() (const Vector< FunctionTraits< T >::ArgType > &x) const =0
	Map a Domain x into a Range y value. More...

Additional Inherited Members
Public Types inherited from casacore::Function< T >
typedef FunctionTraits< T > ::ArgType	ArgType
typedef const ArgType *	FunctionArg
Protected Attributes inherited from casacore::Function< T >
FunctionParam< T >	param_p
	The parameters and masks. More...
Vector< ArgType >	arg_p
	Aid for non-contiguous argument storage. More...
Bool	parset_p
	Indicate parameter written. More...
Bool	locked_p
	Indicate that parameters are expected to be locked from changing. More...

Detailed Description

template<class T>
class casacore::HyperPlane< T >

A hyper plane function.

Intended use:

Public interface

Review Status

Reviewed By:

wbrouw

Date Reviewed:

2004/05/25

Test programs:

tHyperPlane

Prerequisite

• Function

Synopsis

This class forms a function of the form f(x₀,x₁,..,x_m-1) = p₀*x₀ + p₁*x₁ +...

• p_m-1*x_m-1, where p_i are coefficients (parameters) and x_i are independent arguments.

f(x₀,x₁,..,x_m-1) represents a hyper plane of dimension m.

Since the HyperPlane is a Function, the derivatives can be obtained as well.

The parameter interface (see FunctionParam class), is used to provide an interface to the Fitting classes.

This class is in general used implicitly by the HyperPlane class only.

Example

// form the hyper plane function of this form: 
// 6*x0 + 2*x3 
HyperPlane<Double> hyper(4); // 4-dim hyperplane
hyper.parameters()[0] = 6;   
hyper.parameters()[3] = 2;
// Evaluate at x0=5, x3=7
Vector<Double> x(4);
x=0; x[0]=5; x[3]=7;
cout << "Hypervalue: " << hyper(x) << endl;
Hypervalue: 44

Template Type Argument Requirements (T)

• T should have standard numerical operators. Current implementation only tested for real types (and their AutoDiffs).

Thrown Exceptions

• Assertion in debug mode if attempt is made to address incorrect coefficients

Motivation

This class was created to allow the creation of linear constraint functions for the use of linear least-squares fit.

To Do

• Nothing I know of

Definition at line 109 of file HyperPlane.h.

Constructor & Destructor Documentation

template<class T>

casacore::HyperPlane< T >::HyperPlane ( const uInt  m = 0 )

inlineexplicit

Construct an m-dimensional hyper plane which has m parameters.

By default, the coefficients are initialised to zero, and m=0

Definition at line 115 of file HyperPlane.h.

template<class T>

casacore::HyperPlane< T >::HyperPlane ( const HyperPlane< T > &  other )

inline

Copy constructor/assignment (deep copy)

Definition at line 118 of file HyperPlane.h.

template<class T>

template<class W >

casacore::HyperPlane< T >::HyperPlane ( const HyperPlane< W > &  other )

inline

Definition at line 120 of file HyperPlane.h.

template<class T>

virtual casacore::HyperPlane< T >::~HyperPlane ( )

inlinevirtual

Destructor.

Definition at line 126 of file HyperPlane.h.

Member Function Documentation

template<class T>

virtual Function<T>* casacore::HyperPlane< T >::clone ( ) const

inlinevirtual

Return a copy of this object from the heap.

The caller is responsible for deleting the pointer.

Implements casacore::Function< T >.

Definition at line 136 of file HyperPlane.h.

template<class T>

virtual Function<typename FunctionTraits<T>::DiffType>* casacore::HyperPlane< T >::cloneAD ( ) const

inlinevirtual

Reimplemented from casacore::Function< T >.

Definition at line 137 of file HyperPlane.h.

template<class T>

virtual Function<typename FunctionTraits<T>::BaseType>* casacore::HyperPlane< T >::cloneNonAD ( ) const

inlinevirtual

Reimplemented from casacore::Function< T >.

Definition at line 139 of file HyperPlane.h.

template<class T>

virtual T casacore::HyperPlane< T >::eval ( typename Function< T >::FunctionArg  x ) const

virtual

Evaluate the hyper plane function at (x₀,x₁,..,x_m-1).

template<class T>

HyperPlane<T>& casacore::HyperPlane< T >::operator= ( const HyperPlane< T > &  other )

inline

Definition at line 121 of file HyperPlane.h.

References casacore::HyperPlaneParam< T >::operator=().

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

• scimath/Functionals/HyperPlane.h