TF1_red Class Reference

CW: A reduced TF1 class only. Only saves parameters for each TF1 and how many parameters each parameter set has. More...

#include <Splines/SplineStructs.h>

Inheritance diagram for TF1_red:

Collaboration diagram for TF1_red:

Public Member Functions
	TF1_red ()
	Empty constructor.
virtual	~TF1_red ()
	Empty destructor.
	TF1_red (M3::int_t nSize, M3::float_t *Array)
	The useful constructor with deep copy.
	TF1_red (TF1 *&Function)
	The TF1 constructor with deep copy.
void	SetFunc (TF1 *&Func)
	Set the function.
double	Eval (const double var) override
	Evaluate a variation.
void	SetParameter (M3::int_t Parameter, M3::float_t Value)
	Set a parameter to a value.
double	GetParameter (M3::int_t Parameter)
	Get a parameter value.
void	SetSize (M3::int_t nSpline)
	Set the size.
int	GetSize ()
	Get the size.
void	Print () override
	Print detailed info.
TF1 *	ConstructTF1 (const std::string &function, const int xmin, const int xmax)
	KS: Make a TF1 from the reduced TF1.
M3::int_t	GetNp () override
	DL: Get number of points.
Public Member Functions inherited from TResponseFunction_red
	TResponseFunction_red ()
	Empty constructor.
virtual	~TResponseFunction_red ()
	Empty destructor.
virtual double	Eval (const double var)=0
	Evaluate a variation.
virtual void	Print ()=0
	KS: Printer.
virtual M3::int_t	GetNp ()=0
	DL: Get number of points.

Private Attributes
M3::float_t *	Par
	The parameters.
M3::int_t	length

Detailed Description

CW: A reduced TF1 class only. Only saves parameters for each TF1 and how many parameters each parameter set has.

Definition at line 150 of file SplineStructs.h.

Constructor & Destructor Documentation

TF1_red() [1/3]

TF1_red::TF1_red ( )

inline

Empty constructor.

Definition at line 154 of file SplineStructs.h.

            : TResponseFunction_red() {
    length = 0;
    Par = NULL;
  }

~TF1_red()

virtual TF1_red::~TF1_red ( )

inlinevirtual

Empty destructor.

Definition at line 160 of file SplineStructs.h.

                     {
    if (Par != NULL) {
      delete[] Par;
      Par = NULL;
    }
  }

TF1_red() [2/3]

TF1_red::TF1_red ( M3::int_t  nSize, M3::float_t *  Array  )

inline

The useful constructor with deep copy.

Definition at line 168 of file SplineStructs.h.

                                           : TResponseFunction_red() {
    length = nSize;
    for (int i = 0; i < length; ++i) {
      Par[i] = Array[i];
    }
  }

TF1_red() [3/3]

TF1_red::TF1_red ( TF1 *&  Function )

inline

The TF1 constructor with deep copy.

Definition at line 176 of file SplineStructs.h.

                          : TResponseFunction_red() {
    Par = NULL;
    SetFunc(Function);
  }

Member Function Documentation

ConstructTF1()

TF1 * TF1_red::ConstructTF1 ( const std::string &  function, const int  xmin, const int  xmax  )

inline

KS: Make a TF1 from the reduced TF1.

Definition at line 248 of file SplineStructs.h.

                                                                                      {
    TF1 *func = new TF1("TF1", function.c_str(), xmin, xmax);
    for(int i = 0; i < length; ++i) {
      func->SetParameter(i, Par[i]);
    }
    return func;
  }

Eval()

double TF1_red::Eval ( const double  var )

inlineoverridevirtual

Evaluate a variation.

Implements TResponseFunction_red.

Definition at line 194 of file SplineStructs.h.

                                                {
    return Par[1]+Par[0]*var;
 
    /* FIXME in future we might introduce more TF1
    //If we have 5 parameters we're using a fifth order polynomial
    if (Type == kFifthOrderPolynomial) {
      return 1+Par[0]*var+Par[1]*var*var+Par[2]*var*var*var+Par[3]*var*var*var*var+Par[4]*var*var*var*var*var;
    } else if (Type == kTwoLinears) {
      return (var <= 0)*(Par[2]+Par[0]*var)+(var > 0)*(Par[2]+Par[1]*var);
    } else if (Type == kLinear) {
      return (Par[1]+Par[0]*var);
    } else if (Type == kPseudoHeaviside) {
      return (var <= 0)*(1+Par[0]*var) + (1 >= var)*(var > 0)*(1+Par[1]*var) + (var > 1)*(Par[3]+Par[2]*var);
    }else {
      MACH3LOG_ERROR("    Class only knows about 5th order polynomial, two superposed linear functions, linear function, or pseudo Heaviside.");
      MACH3LOG_ERROR("    You have tried something else than this, which remains unimplemented.");
      MACH3LOG_ERROR("{}: {}", __FILE__, __LINE__);
      throw MaCh3Exception(__FILE__ , __LINE__ );
    }
    */
  }

GetNp()

M3::int_t TF1_red::GetNp ( )

inlineoverridevirtual

DL: Get number of points.

Implements TResponseFunction_red.

Definition at line 257 of file SplineStructs.h.

{ return length; }

GetParameter()

double TF1_red::GetParameter ( M3::int_t  Parameter )

inline

Get a parameter value.

Definition at line 222 of file SplineStructs.h.

                                         {
    if (Parameter > length) {
      MACH3LOG_ERROR("You requested parameter number {} but length is {} parameters", Parameter, length);
      throw MaCh3Exception(__FILE__ , __LINE__ );
      return -999.999;
    }
    return Par[Parameter];
  }

GetSize()

int TF1_red::GetSize ( )

inline

Get the size.

Definition at line 237 of file SplineStructs.h.

{ return length; }

Print()

void TF1_red::Print ( )

inlineoverridevirtual

Print detailed info.

Implements TResponseFunction_red.

Definition at line 239 of file SplineStructs.h.

                               {
    MACH3LOG_INFO("Printing TF1_red:");
    MACH3LOG_INFO("  Length  = {}", length);
    for (int i = 0; i < length; i++) {
      MACH3LOG_INFO("  Coeff {}  = {}", i, Par[i]);
    }
  }

SetFunc()

void TF1_red::SetFunc ( TF1 *&  Func )

inline

Set the function.

Definition at line 182 of file SplineStructs.h.

                                  {
    length = M3::int_t(Func->GetNpar());
    if (Par != NULL) delete[] Par;
    Par = new M3::float_t[length];
    for (int i = 0; i < length; ++i) {
      Par[i] = M3::float_t(Func->GetParameter(i));
    }
    delete Func;
    Func = NULL;
  }

SetParameter()

void TF1_red::SetParameter ( M3::int_t  Parameter, M3::float_t  Value  )

inline

Set a parameter to a value.

Definition at line 217 of file SplineStructs.h.

                                                               {
    Par[Parameter] = Value;
  }

SetSize()

void TF1_red::SetSize ( M3::int_t  nSpline )

inline

Set the size.

Definition at line 232 of file SplineStructs.h.

                                       {
    length = nSpline;
    Par = new M3::float_t[length];
  }

Member Data Documentation

length

M3::int_t TF1_red::length

private

Definition at line 262 of file SplineStructs.h.

Par

M3::float_t* TF1_red::Par

private

The parameters.

Definition at line 261 of file SplineStructs.h.

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

• Splines/SplineStructs.h