Parameter fit class. More...

#include <lmfit.h>

Inheritance diagram for LMFit:

Signals
void	updateMessage (const QString &message)
	Emitted when a message should be displayed. More...

Public Member Functions
	LMFit (const QList< const ArrayItem * > aList, QList< FunItem > fList, const bool bFit, double par, QObject parent=0, const double *sigma=0)
	Constructor. More...

	~LMFit ()
	Destructor. More...

bool	linFit (int n, int nPar, double par[], double resVector[], double fJac[], int iPvt[])
	Performs general linear least square parameter fit. More...

void	lmdif (int n, int nPar, double par[], double resVector[], double tol, int itMax, int *info, double fJac[], int iPvt[])
	Performs nonlinear Levenberg-Marquardt parameter fit. More...

void	setSigma (const double *sigma)
	Sets data error array. More...

void	setUserBreak (bool userBreak=true)
	Sets condition to stop calculations. More...

bool	userBreak () const
	Returns current break condition for calculations. More...

Public Member Functions inherited from QObject
	QObject (QObject *parent)

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

virtual const QMetaObject *	metaObject () const

QString	objectName () const

void	setObjectName (const QString &name)

bool	isWidgetType () const

bool	signalsBlocked () const

bool	blockSignals (bool block)

QThread *	thread () const

void	moveToThread (QThread *targetThread)

int	startTimer (int interval)

void	killTimer (int id)

T	findChild (const QString &name) const

QList< T >	findChildren (const QString &name) const

QList< T >	findChildren (const QRegExp &regExp) const

QObject *	child (const char objName, const char inheritsClass, bool recursiveSearch) const

const QObjectList &	children () const

void	setParent (QObject *parent)

void	installEventFilter (QObject *filterObj)

void	removeEventFilter (QObject *obj)

bool	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const

bool	disconnect (const char signal, const QObject receiver, const char *method)

bool	disconnect (const QObject receiver, const char method)

void	dumpObjectTree ()

void	dumpObjectInfo ()

bool	setProperty (const char *name, const QVariant &value)

QVariant	property (const char *name) const

QList< QByteArray >	dynamicPropertyNames () const

void	destroyed (QObject *obj)

QObject *	parent () const

bool	inherits (const char *className) const

void	deleteLater ()

	QObject (QObject parent, const char name)

void	insertChild (QObject *object)

void	removeChild (QObject *object)

bool	isA (const char *className) const

const char *	className () const

const char *	name () const

const char *	name (const char *defaultName) const

void	setName (const char *name)

Static Public Member Functions
static double	enorm (int n, const double x[])
	Calculates the euclidean norm of x. More...

static double	igamc (double a, double x)
	Calculates complemented incomplete gamma integral. More...

static int	minv (double a[], double x[], int n)
	Finds the inverse of a square matrix. More...

Static Public Member Functions inherited from QObject
QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

bool	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

Protected Member Functions
void	fcn (int n, int np, const double p[], double fvec[], int *iflag)

void	fdjac2 (int m, int n, double x[], const double fvec[], double fjac[], int ldfjac, int *iflag, double epsfcn, double wa[])

void	lmdif (int m, int np, double px[], double fvec[], double ftol, double ptol, double gtol, int maxfev, double epsfcn, double diag[], int mode, double factor, int nprint, int info, int nfev, double fjac[], int ldfjac, int ipvt[], double qtf[], double wa1[], double wa2[], double wa3[], double wa4[])

Protected Member Functions inherited from QObject
QObject *	sender () const

int	senderSignalIndex () const

int	receivers (const char *signal) const

virtual void	timerEvent (QTimerEvent *event)

virtual void	childEvent (QChildEvent *event)

virtual void	customEvent (QEvent *event)

virtual void	connectNotify (const char *signal)

virtual void	disconnectNotify (const char *signal)

bool	checkConnectArgs (const char signal, const QObject object, const char *method)

Protected Attributes
bool	m_userBreak

const bool *	m_bFit

double *	m_par

const double *	m_sigma

const QList< const ArrayItem * > *	m_aList

QList< FunItem * > *	m_fList

Additional Inherited Members
Static Protected Member Functions inherited from QObject
QByteArray	normalizeSignalSlot (const char *signalSlot)

Properties inherited from QObject
	objectName

Detailed Description

Parameter fit class.

Provides methods for nonlinear Levenberg-Marquardt parameter fits and general linear least square parameter fits.

The functions lmdif, lmpar, fdjac2, qrsolv, qrfac, and enorm use code from the public domain Fortran version of Argonne National Laboratories MINPACK, C translation by Steve Moshier. Modifications by Werner Stille.

The functions minv, igamc, igam, simq, and mtransp are from the Cephes Math Library Release 2.7, Copyright by Stephen L. Moshier.

The function lgam (original name: gsl_sf_lngamma_impl, Author: G. Jungman) is from the GNU Scientific Library. Modifications by Werner Stille.

Constructor & Destructor Documentation

LMFit::LMFit	(	const QList< const ArrayItem * > *	aList,
		QList< FunItem * > *	fList,
		const bool *	bFit,
		double *	par,
		QObject *	parent = `0`,
		const double *	sigma = `0`
	)

Constructor.

Parameters

aList	list of array items.
fList	list of function items.
bFit	array containing true values for parameters to be fitted.
par	array of parameters.
sigma	array for data errors.
parent	pointer to parent widget.

LMFit::~LMFit ( )

Destructor.

Member Function Documentation

static double LMFit::enorm	(	int	n,
		const double	x[]
	)

static

Calculates the euclidean norm of x.

Parameters

n	length of x.
x	input array.

Returns: euclidean norm of x.

static double LMFit::igamc	(	double	a,
		double	x
	)

static

Calculates complemented incomplete gamma integral.

Parameters

a	argument of gamma function.
x	upper boundary of integral.

Returns: complemented incomplete gamma integral.

bool LMFit::linFit	(	int	n,
		int	nPar,
		double	par[],
		double	resVector[],
		double	fJac[],
		int	iPvt[]
	)

Performs general linear least square parameter fit.

Parameters

n	number of data points.
nPar	number of parameters to be fitted.
par	array of parameters to be fitted.
resVector	array for weighted residuals.
fJac	array for calculating the Jacobian matrix.
iPvt	array defining a permutation matrix for calculating the Jacobian matrix.

Returns: true in case of termination by user.

void LMFit::lmdif	(	int	n,
		int	nPar,
		double	par[],
		double	resVector[],
		double	tol,
		int	itMax,
		int *	info,
		double	fJac[],
		int	iPvt[]
	)

Performs nonlinear Levenberg-Marquardt parameter fit.

Parameters

n	number of data points.
nPar	number of parameters to be fitted.
par	array of parameters to be fitted.
resVector	array for weighted residuals.
tol	tolerance value for stopping nonlinear fit iterations.
itMax	maximum number of nonlinear fit iterations.
info	error code.
fJac	array for calculating the Jacobian matrix.
iPvt	array defining a permutation matrix for calculating the Jacobian matrix.

static int LMFit::minv	(	double	a[],
		double	x[],
		int	n
	)

static

Finds the inverse of a square matrix.

Parameters

a	input matrix.
x	output matrix.
n	numbers of rows and columns of input matrix.

Returns: 0 for success.

void LMFit::setSigma ( const double * sigma )

inline

Sets data error array.

Parameters

sigma array for data errors.

void LMFit::setUserBreak ( bool userBreak = true )

inline

Sets condition to stop calculations.

Parameters

userBreak true to break calculations.

void LMFit::updateMessage ( const QString & message )

signal

Emitted when a message should be displayed.

Parameters

message message text

bool LMFit::userBreak ( ) const

inline

Returns current break condition for calculations.

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

lmfit.h

Signals

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation