library: libHist
#include "TF12.h"


class description - source file - inheritance tree (.pdf)

class TF12 : public TF1

Inheritance Chart:

TF12() TF12(const char* name, TF2* f2, Double_t xy, Option_t* option = "x") TF12(const TF12& f12) virtual ~TF12() static TClass* Class() virtual void Copy(TObject& f12) const virtual TF1* DrawCopy(Option_t* option = "") const virtual Double_t Eval(Double_t x, Double_t y = 0, Double_t z = 0, Double_t t = 0) const virtual Double_t EvalPar(const Double_t* x, const Double_t* params = 0) virtual Double_t GetXY() const virtual TClass* IsA() const virtual void SavePrimitive(ofstream& out, Option_t* option) virtual void SetXY(Double_t xy) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b)

Data Members

Double_t fXY Value along Y (if projection X) or X (if projection Y) Int_t fCase projection along X(0), or Y(1) TF2* fF2 pointer to the mother TF2

Class Description

 a projection of a TF2 along X or Y
 has the same behaviour as a TF1

      Example of a function

   TF2 *f2 = new TF2("f2","sin(x)*sin(y)/(x*y)",0,5,0,5);
   TF12 *f12 = new TF12("f12",f2,0.1,"y");

TF12(): TF1()
 TF12 default constructor

TF12(const char *name, TF2 *f2, Double_t xy, Option_t *option) :TF1(name,"x",0,0)
 TF12 normal constructor
   Create a TF12 (special TF1) from a projection of a TF2
   for a fix value of Y if option="X" or X if option="Y"
 This value may be changed at any time via TF12::SetXY(xy)

*-*-*-*-*-*-*-*-*-*-*F2 default destructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  =====================

TF12(const TF12 &f12) : TF1(f12)

void Copy(TObject &obj) const
*-*-*-*-*-*-*-*-*-*-*Copy this F2 to a new F2*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  ========================

TF1* DrawCopy(Option_t *option) const
*-*-*-*-*-*-*-*Draw a copy of this function with its current attributes*-*-*
*-*            ========================================================
*-*  This function MUST be used instead of Draw when you want to draw
*-*  the same function with different parameters settings in the same canvas.
*-* Possible option values are:
*-*   "SAME"  superimpose on top of existing picture
*-*   "L"     connect all computed points with a straight line
*-*   "C"     connect all computed points with a smooth curve.
*-* Note that the default value is "F". Therefore to draw on top
*-* of an existing picture, specify option "SL"

Double_t Eval(Double_t x, Double_t /*y*/, Double_t /*z*/, Double_t /*t*/) const
*-*-*-*-*-*-*-*-*-*-*Evaluate this formula*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  =====================
*-*   Computes the value of the referenced TF2 for a fix value of X or Y

Double_t EvalPar(const Double_t *x, const Double_t *params)
 Evaluate this function at point x[0]
   x[0] is the value along X if fCase =0, the value along Y if fCase=1
 if params is non null, the array will be used instead of the internal TF2

void SavePrimitive(ofstream & /*out*/, Option_t * /*option*/)
 Save primitive as a C++ statement(s) on output stream out

void SetXY(Double_t xy)
 set the value of the constant for the TF2
   constant in X when projecting along Y
   constant in Y when projecting along X
  The function title is set to include the value of the constant
  The current pad is updated

Inline Functions

           Double_t GetXY() const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)

Author: Rene Brun 05/04/2003
Last update: root/hist:$Name: $:$Id: TF12.cxx,v 1.4 2005/04/29 20:34:51 brun Exp $
Copyright (C) 1995-2003, Rene Brun and Fons Rademakers. *

ROOT page - Class index - Class Hierarchy - Top of the page

This page has been automatically generated. If you have any comments or suggestions about the page layout send a mail to ROOT support, or contact the developers with any questions or problems regarding ROOT.