Exponential times a Sinc. More...

#include <MathFunc.h>

Inheritance diagram for casacore::ExpSincConv< T >:

Public Member Functions
	ExpSincConv (T cut=MathFunc< T >::defcutoff(), T sincparm=MathFunc< T >::defSincparm(), T exppow=MathFunc< T >::defExpPower(), T expscale=MathFunc< T >::defExpScale())
	default constructor More...

	ExpSincConv (const ExpSincConv< T > &)
	copy constructor More...

ExpSincConv< T > &	operator= (const ExpSincConv< T > &)
	assignment operator More...

T	sup_value () const
	get access to the support width More...

T	value (const T &) const
	and get the value of the function More...

FuncId	id () const
	return FuncID structure for Table storage/retrieval. More...

Public Member Functions inherited from casacore::MathFunc< T >
	MathFunc (FUNCTYPE)
	constructors More...

	MathFunc (FUNCTYPE, T cutoff, T arg1=1.0e+30, T arg2=1.0e+30, T arg3=1.0e+30)
	accept up to 4 arguments, the first being the support radius More...

	MathFunc (String &, Vector< double > &)

	MathFunc (const MathFunc< T > &)

	MathFunc (MathFunc< T > *)

virtual	~MathFunc ()
	Destructor. More...

MathFunc< T > &	operator= (const MathFunc< T > &)
	Assignment operator - Note: this function works only for envelops. More...

Private Member Functions
MathFunc< T > *	clone () const
	for every derived class, return new of that class with its own parameters More...

Private Attributes
T	sup_width

T	scale

T	exponent

T	sincpByPi

Additional Inherited Members
Static Public Member Functions inherited from casacore::MathFunc< T >
static MathFunc< T > *	newMathFunc (const MathFunc< T > &)
	create a new math function More...

static T	defcutoff ()
	These functions return the static constants used as default parameters for the various derived functions. More...

static T	defwidth ()
	The default width for Gaussian_Conv. More...

static T	defKBwidth ()
	The default width for KB_Conv and Mod_KB_Conv. More...

static T	defKBparm ()
	A default parameter for KB_Conv and Mod_KB_Conv. More...

static T	defmodKBparm ()
	A default parameter for Mod_KB_Conv. More...

static T	defSphcutoff ()
	The default support radius for Sinc_Conv and Sph_Conv. More...

static T	defSincparm ()
	The default Sinc parameter for Sinc_Conv and Exp_Sinc_Conv. More...

static T	defSphparm ()
	The default parameter for Sph_Conv. More...

static T	defExpPower ()
	The default exponential power for Exp_Sinc_Conv. More...

static T	defExpScale ()
	The default exponential scale length for Exp_Sinc_Conv. More...

Protected Member Functions inherited from casacore::MathFunc< T >
	MathFunc ()
	Default constructor (Null) More...

Protected Attributes inherited from casacore::MathFunc< T >
MathFunc< T > *	object
	pointer to letter class More...

Detailed Description

template<class T>
class casacore::ExpSincConv< T >

Exponential times a Sinc.

Synopsis

An Exponential times a Sinc

The value(T &x) is given by Exp(-(abs(x) / expscale) ** exppow) * Sinc(pi * x / sincparm)

where the 3 paramaters correspond to those in the default constructor Note that the default case of exppow = 2 is a Gaussian times a Sinc. Since this is often a useful case, that parameter appears last in the constructor.

Definition at line 505 of file MathFunc.h.

Constructor & Destructor Documentation

template<class T>

casacore::ExpSincConv< T >::ExpSincConv	(	T	cut = `MathFunc< T >::defcutoff()`,
		T	sincparm = `MathFunc< T >::defSincparm()`,
		T	exppow = `MathFunc< T >::defExpPower()`,
		T	expscale = `MathFunc< T >::defExpScale()`
	)