OLS.h

#ifndef STATISTICS_OLS_H
#define STATISTICS_OLS_H

#include "statistics.h"

namespace Statistics {

class LeastSquares1D
{
 public:
  LeastSquares1D(const Vector& x,const Vector& y);
  LeastSquares1D(const Vector& x,const Vector& y,const Vector& weights);
  bool Solve();               
  bool SolveUnweighted();     
  bool SolveWeighted();       
  bool SolvePerpendicular();  

  const Vector &x, &y;
  const Vector* w;
  Real a,b;        
  Real stda,stdb;  
  Real corrCoeff;  
};


bool LeastSquares(const Matrix& data,const Vector& outcome,
                  Vector& coeffs,Real& offset);

bool LeastSquares(const std::vector<Vector>& data,int dependentVariable,
                  Vector& coeffs);

bool LeastSquaresPickDependent(const std::vector<Vector>& data,
                               int& dependentVariable,Vector& coeffs);

} //namespace Statistics

#endif