CctwLinearFitter Class Reference

#include <cctwlinearfitter.h>

Inheritance diagram for CctwLinearFitter:

Collaboration diagram for CctwLinearFitter:

Public Slots
void	startNewFit ()
void	appendPoint (double x, double y)
void	performFit (int skipStart, int skipEnd)
double	slope ()
double	intercept ()
double	rSquared ()
Public Slots inherited from CctwObject
virtual void	printLine (QString line)
virtual void	printMessage (QString msg, QDateTime dt=QDateTime::currentDateTime())
virtual QString	settingsScript ()
QString	scriptValueLiteral (QVariant v)

Public Member Functions
	CctwLinearFitter (QString name, QObject *parent=0)
Public Member Functions inherited from CctwObject
	CctwObject (QString name, QObject *parent=0)
virtual void	writeSettings (QSettings *set, QString section)
virtual void	readSettings (QSettings *set, QString section)

Private Attributes
QVector< double >	m_XData
QVector< double >	m_YData
double	m_Slope
double	m_Intercept
double	m_RSquared

Additional Inherited Members
Properties inherited from CctwObject
QString	name

Detailed Description

Definition at line 6 of file cctwlinearfitter.h.

Constructor & Destructor Documentation

CctwLinearFitter::CctwLinearFitter ( QString  name, QObject *  parent = 0  )

explicit

Definition at line 3 of file cctwlinearfitter.cpp.

References startNewFit().

                                                                :
  CctwObject(name, parent)
{
  startNewFit();
}

Member Function Documentation

void CctwLinearFitter::appendPoint ( double  x, double  y  )

slot

Definition at line 18 of file cctwlinearfitter.cpp.

References m_XData, and m_YData.

{
  m_XData.append(x);
  m_YData.append(y);
}

double CctwLinearFitter::intercept ( )

slot

Definition at line 64 of file cctwlinearfitter.cpp.

References m_Intercept.

{
  return m_Intercept;
}

void CctwLinearFitter::performFit ( int  skipStart, int  skipEnd  )

slot

Definition at line 24 of file cctwlinearfitter.cpp.

References m_Intercept, m_RSquared, m_Slope, m_XData, and m_YData.

{
  int start = skipStart, end = m_XData.count()-skipEnd;

  double n = 0, meanx = 0, meany = 0;

  for (int i=start; i<end; i++) {
    n += 1;
    meanx += m_XData[i];
    meany += m_YData[i];
  }

  meanx /= n;
  meany /= n;

  double ssxx = 0, ssyy = 0, ssxy = 0;

  for (int i=start; i<end; i++) {
    double x = m_XData[i] - meanx;
    double y = m_YData[i] - meany;

    ssxx += x*x;
    ssyy += y*y;
    ssxy += x*y;
  }

  ssxx /= n;
  ssyy /= n;
  ssxy /= n;

  m_Slope     = ssxy / ssxx;
  m_Intercept = meany - m_Slope*meanx;
  m_RSquared  = (ssxy*ssxy)/(ssxx*ssyy);
}

double CctwLinearFitter::rSquared ( )

slot

Definition at line 69 of file cctwlinearfitter.cpp.

References m_RSquared.

{
  return m_RSquared;
}

double CctwLinearFitter::slope ( )

slot

Definition at line 59 of file cctwlinearfitter.cpp.

References m_Slope.

{
  return m_Slope;
}

void CctwLinearFitter::startNewFit ( )

slot

Definition at line 9 of file cctwlinearfitter.cpp.

References m_Intercept, m_RSquared, m_Slope, m_XData, and m_YData.

Referenced by CctwLinearFitter().

{
  m_XData.resize(0);
  m_YData.resize(0);
  m_Slope = 0;
  m_Intercept = 0;
  m_RSquared = 0;
}

Member Data Documentation

double CctwLinearFitter::m_Intercept

private

Definition at line 26 of file cctwlinearfitter.h.

Referenced by intercept(), performFit(), and startNewFit().

double CctwLinearFitter::m_RSquared

private

Definition at line 27 of file cctwlinearfitter.h.

Referenced by performFit(), rSquared(), and startNewFit().

double CctwLinearFitter::m_Slope

private

Definition at line 25 of file cctwlinearfitter.h.

Referenced by performFit(), slope(), and startNewFit().

QVector<double> CctwLinearFitter::m_XData

private

Definition at line 23 of file cctwlinearfitter.h.

Referenced by appendPoint(), performFit(), and startNewFit().

QVector<double> CctwLinearFitter::m_YData

private

Definition at line 24 of file cctwlinearfitter.h.

Referenced by appendPoint(), performFit(), and startNewFit().

---

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

• /home/jennings/development/cctw/cctw-code/cctwlib/cctwlinearfitter.h
• /home/jennings/development/cctw/cctw-code/cctwlib/cctwlinearfitter.cpp