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lregress.h

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#ifndef LREGRESS_H_
#define LREGRESS_H_

#include <vector>

class lregress
{
private:
  lregress( const lregress &rhs );

public:
  lregress() {}
  ~lregress() {}

  class point
  {
  private:
    double x_, y_;
  public:
    point( double xVal, double yVal ) { x_ = xVal; y_ = yVal; }
    point( const point &rhs ) { x_ = rhs.x_; y_ = rhs.y_; }
    ~point() {};

    double x() { return x_; }
    void x(const double v) { x_ = v; }
    double y() { return y_; }
    void y(const double v) { y_ = v; }
  }; // class point

  class lineInfo
  {
  private:
    double slope_;
    double intercept_;
    double stddev_;
    double slopeError_;
    double cor_;
  public:
    lineInfo()
    {
      slope_ = 0;
      intercept_ = 0;
      cor_ = 0;
      stddev_;
      slopeError_ = 0;
    }
    ~lineInfo() {}
    lineInfo( const lineInfo &rhs )
    {
      slope_ = rhs.slope_;
      intercept_ = rhs.intercept_;
      cor_ = rhs.cor_;
      stddev_ = rhs.stddev_;
      slopeError_ = rhs.slopeError_;
    }
    
    double slope() { return slope_; }
    void slope( double s ) { slope_ = s; }

    double intercept() { return intercept_; }
    void intercept( double a ) { intercept_ = a; }

    double stddev() { return stddev_; }
    void stddev( double s ) { stddev_ = s; }

    double corr() { return cor_; }
    void corr( double c ) { cor_ = c; }

    double slopeErr() { return slopeError_; }
    void slopeErr(double e) { slopeError_ = e; }
  }; // class lineInfo

  double meanX( std::vector<point> &data ) const;
  double meanY( std::vector<point> &data ) const;

  void lr( std::vector<point> &data, lineInfo &info ) const;

}; // lregress

#endif

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