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Reference Guide
TF3.cxx
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1 // @(#)root/hist:$Id$
2 // Author: Rene Brun 27/10/95
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #include "TROOT.h"
13 #include "TF3.h"
14 #include "TMath.h"
15 #include "TH3.h"
16 #include "TVirtualPad.h"
17 #include "TRandom.h"
18 #include "TVectorD.h"
19 #include "Riostream.h"
20 #include "TColor.h"
21 #include "TVirtualFitter.h"
22 #include "TVirtualHistPainter.h"
23 #include "TClass.h"
24 #include <cassert>
25 
26 ClassImp(TF3);
27 
28 /** \class TF3
29  \ingroup Hist
30 A 3-Dim function with parameters
31 */
32 
33 ////////////////////////////////////////////////////////////////////////////////
34 /// F3 default constructor
35 
36 TF3::TF3(): TF2()
37 {
38  fNpz = 0;
39  fZmin = 0;
40  fZmax = 1;
41 }
42 
43 
44 ////////////////////////////////////////////////////////////////////////////////
45 /// F3 constructor using a formula definition
46 ///
47 /// See TFormula constructor for explanation of the formula syntax.
48 
49 TF3::TF3(const char *name,const char *formula, Double_t xmin, Double_t xmax, Double_t ymin, Double_t ymax, Double_t zmin, Double_t zmax, Option_t * opt)
50  :TF2(name,formula,xmin,xmax,ymax,ymin,opt)
51 {
52  fZmin = zmin;
53  fZmax = zmax;
54  fNpz = 30;
55  Int_t ndim = GetNdim();