leastsqrs Class Reference

Fit connected straight lines in 2D minimizing their length. More...

#include <leastsqrs.h>

Collaboration diagram for leastsqrs:

List of all members.

Public Member Functions

leastsqrs (vector< pt2 > const &pts_, double const alpha_=1.0, double const beta_=1.0)

~leastsqrs ()

void operator() (double &fval)

Public Attributes

double alpha

The weight of the change in y.

double beta

The weight of the line length.

double * xi

The varying y coordinate state.

Detailed Description

Fit connected straight lines in 2D minimizing their length.

Minimize the y coordinate of each point. alpha * distance(pts[i].y-x[i])

Minimize the straight line segment lengths. beta * dist(pts[i+1],pts[i])

Definition at line 19 of file leastsqrs.h.

Constructor & Destructor Documentation

leastsqrs::leastsqrs	(	vector< pt2 > const &	pts_,
		double const	alpha_ = `1.0`,
		double const	beta_ = `1.0`
	)

Definition at line 4 of file leastsqrs.cpp.

References pts.

00009   : pts(pts_), alpha(alpha_), beta(beta_)
00010 {
00011   size = pts.size();
00012 
00013   xi = new double[size];
00014 }

leastsqrs::~leastsqrs ( )

Definition at line 37 of file leastsqrs.cpp.

References xi.

00038 {
00039   delete[] xi;
00040   xi=0;
00041 }

Member Function Documentation

void leastsqrs::operator() ( double & fval )

Definition at line 17 of file leastsqrs.cpp.

References pts.

00020 {
00021   fval=0.0;
00022   double z;
00023   for (uint i=0; i<size; ++i)
00024   {
00025     z = pts[i].y-xi[i];
00026     fval += alpha*z*z;
00027   }
00028   for (uint i=0; i<size-1; ++i)
00029   {
00030     z = (pts[i].x-pts[i+1].x);  //can remove
00031     fval += beta*z*z;
00032     z = xi[i+1]-xi[i];
00033     fval += beta*z*z;
00034   }
00035 }

Member Data Documentation

double leastsqrs::alpha

The weight of the change in y.

Definition at line 27 of file leastsqrs.h.

double leastsqrs::beta

The weight of the line length.

Definition at line 29 of file leastsqrs.h.

double* leastsqrs::xi

The varying y coordinate state.

Definition at line 31 of file leastsqrs.h.

Referenced by ~leastsqrs().

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

patternsearch/leastsqrs.h
patternsearch/leastsqrs.cpp


Public Member Functions
	leastsqrs (vector< pt2 > const &pts_, double const alpha_=1.0, double const beta_=1.0)
	~leastsqrs ()
void	operator() (double &fval)
Public Attributes
double	alpha
	The weight of the change in y.
double	beta
	The weight of the line length.
double *	xi
	The varying y coordinate state.