hitfit::Chisq_Constrainer Class Reference

Minimize a subject to a set of constraints. Based on the SQUAW algorithm. More...

#include <Chisq_Constrainer.h>

Inheritance diagram for hitfit::Chisq_Constrainer:

Public Member Functions
	Chisq_Constrainer (const Chisq_Constrainer_Args &args)
virtual double	fit (Constraint_Calculator &constraint_calculator, const Column_Vector &xm, Column_Vector &x, const Column_Vector &ym, Column_Vector &y, const Matrix &G_i, const Diagonal_Matrix &Y, Column_Vector &pullx, Column_Vector &pully, Matrix &Q, Matrix &R, Matrix &S)
virtual std::ostream &	print (std::ostream &s) const
	Print the state of this instance of Chisq_Constrainer. More...
virtual	~Chisq_Constrainer ()
Public Member Functions inherited from hitfit::Base_Constrainer
	Base_Constrainer (const Base_Constrainer_Args &args)
virtual	~Base_Constrainer ()

Private Attributes
const Chisq_Constrainer_Args	_args

Additional Inherited Members
Protected Member Functions inherited from hitfit::Base_Constrainer
bool	call_constraint_fcn (Constraint_Calculator &constraint_calculator, const Column_Vector &x, const Column_Vector &y, Row_Vector &F, Matrix &Bx, Matrix &By) const
	Helper function to evaluate constraints. This takes care of checking what the user function returns againts numerical derivatives, it that was requested. More...

Detailed Description

Minimize a subject to a set of constraints. Based on the SQUAW algorithm.

Definition at line 252 of file Chisq_Constrainer.h.

Constructor & Destructor Documentation

hitfit::Chisq_Constrainer::Chisq_Constrainer

(

const Chisq_Constrainer_Args &

args

)

Constructor. Create an instance of Chisq_Constrainer from a Chisq_Constrainer_Args object.

Parameters

args	The parameter settings for this instance.

Definition at line 307 of file Chisq_Constrainer.cc.

virtual hitfit::Chisq_Constrainer::~Chisq_Constrainer ( )

inlinevirtual

Destructor.

Definition at line 274 of file Chisq_Constrainer.h.

Member Function Documentation

double hitfit::Chisq_Constrainer::fit ( Constraint_Calculator &  constraint_calculator, const Column_Vector &  xm, Column_Vector &  x, const Column_Vector &  ym, Column_Vector &  y, const Matrix &  G_i, const Diagonal_Matrix &  Y, Column_Vector &  pullx, Column_Vector &  pully, Matrix &  Q, Matrix &  R, Matrix &  S  )

virtual

@ brief Do a constrained fit. Call the number of well-measured variables Nw, the number of poorly-measured variables Np, and the number of constraints Nc.

Parameters

constraint_calculator	The object that will be used to evaluate the constraints.
xm	Measured values of the well-measured variables, has dimension Nw.
x	Before the fit: starting value of the well-measured variables for the fit, has dimension Nw. After the fit: final values of the well-measured variables.
ym	Measured values of the poorly-measured variables, has dimension Np.
y	Before the fit: starting value of the poorly-measured variables for the fit, has dimension Np. After the fit: final values of the poorly-measured variables.
G_i	Error matrix for the well-measured variables, has dimension Nw,Nw.
Y	Inverse error matrix for the poorly-measured variables, has dimension Np,Np.
pullx	Pull quantities for the well-measured variables, has dimension Nw.
pully	Pull quantities for the poorly-measured variables, has dimension Np.
Q	Error matrix for the well-measured variables, has dimension Nw,Nw.
R	Error matrix for the poorly-measured variables, has dimension Np,Np.
S	Error matrix for the correlation between well-measured variables and poorly-measured variables, has dimension Nw,Np.

Input:

constraint_calculator, xm, x, ym, y, G_i, y..

Output:

x, y, pullx, pully, Q, R, S.

Return:

of the fit. Should returns a negative value if the fit does not converge.

cout << "singular matrix!";

Implements hitfit::Base_Constrainer.

Definition at line 320 of file Chisq_Constrainer.cc.

std::ostream & hitfit::Chisq_Constrainer::print ( std::ostream &  s ) const

virtual

Print the state of this instance of Chisq_Constrainer.

Parameters

s	The output stream to which the output is sent.

Reimplemented from hitfit::Base_Constrainer.

Definition at line 673 of file Chisq_Constrainer.cc.

Member Data Documentation

const Chisq_Constrainer_Args hitfit::Chisq_Constrainer::_args

private

Parameter settings for this instance of Chisq_Constrainer.

Definition at line 376 of file Chisq_Constrainer.h.