TF12

class TF12 : public TF1

    public:

                       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

    protected:

      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");
   f12->Draw();

 TF12 default constructor

 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*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  =====================

*-*-*-*-*-*-*-*-*-*-*Copy this F2 to a new F2*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  ========================

*-*-*-*-*-*-*-*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"
*-*
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

*-*-*-*-*-*-*-*-*-*-*Evaluate this formula*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
*-*                  =====================
*-*
*-*   Computes the value of the referenced TF2 for a fix value of X or Y
*-*
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

 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
 parameters

 Save primitive as a C++ statement(s) on output stream out

 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)