#include <SaturationFcn.h>

Inheritance diagram for SaturationFcn:

Public Member Functions
virtual double	operator() (const std::vector< double > &x) const

	SaturationFcn ()

void	set_data (int N, float charge_ptr, float adc_ptr)

virtual double	Up () const

	~SaturationFcn ()

Public Attributes
double	x0start

double	x1start

double	x2start

double	x3start

Private Attributes
double	datx [20]

double	daty [20]

Detailed Description

Definition at line 7 of file SaturationFcn.h.

Constructor & Destructor Documentation

SaturationFcn::SaturationFcn ( )

inline

Definition at line 11 of file SaturationFcn.h.

11 {}

SaturationFcn::~SaturationFcn ( )

inline

Definition at line 13 of file SaturationFcn.h.

13 {}

Member Function Documentation

virtual double SaturationFcn::operator() ( const std::vector< double > & x ) const

inlinevirtual

Definition at line 37 of file SaturationFcn.h.

References datx, daty, i, N, funct::pow(), and tmp.

                                                              {
    double chisq = 0.0;  
    int N=20;
   for(int i=0;i<N;i++){
     double val=1.0+pow(x[1]*datx[i],x[2]);
     double val2=1.0/x[2];
     val=x[0]*x[1]*datx[i]/pow(val,val2);
     double tmp=(daty[i]-x[3]-val);
     //printf(" dat: %d %f %f %f %f \n",i,datx[i],daty[i]-x[3],val,tmp);
     chisq=chisq+tmp*tmp;
   }
   //printf("x0-3 %f %f %f %f chisq %f \n",x[0],x[1],x[2],x[3],chisq);
   return chisq; 
  }

void SaturationFcn::set_data	(	int	N,
		float *	charge_ptr,
		float *	adc_ptr
	)

inline

Definition at line 16 of file SaturationFcn.h.

References datx, daty, i, N, x, x0start, x1start, x2start, x3start, and detailsBasic3DVector::y.

Referenced by SaturationFit::SaturationFit().

                                                       {
  
    float x[20],y[20];
 
    for(int i=0;i<N;i++){
      x[i]=charge_ptr[i];
      y[i]=adc_ptr[i];
      datx[i]=x[i];
      daty[i]=y[i];
      //printf("%d  datx daty %f %f \n",i,datx[i],daty[i]);
    }
 
    x3start=(y[4]*x[1]-y[1]*x[4])/(x[1]-x[4]);
    x0start=daty[13]-x3start;
    x1start=(y[4]-y[1])/(x[4]-x[1])/x0start;
    x2start=20.;
    //printf(" x0-2start %f %f %f %f\n",x0start,x1start,x2start,x3start);
  }