#include <SaturationFcn.h>

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.

{}

SaturationFcn::~SaturationFcn ( ) [inline]

Definition at line 13 of file SaturationFcn.h.

{}

Member Function Documentation

virtual double SaturationFcn::operator() ( const std::vector< double > & x ) const [inline, virtual]

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);
 }