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glh3c.C
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1/// \file
2/// \ingroup tutorial_gl
3/// Display a 3D histogram using GL (box option).
4///
5/// \macro_image(nobatch)
6/// \macro_code
7///
8/// \author Timur Pocheptsov
9
10void glh3c()
11{
13
14
16 TH3F * h1 = new TH3F("h1", "h1", 10, -1., 1., 10, -1., 1., 10, -1., 1.);
17 TF3 * g3 = new TF3("gaus3","xyzgaus");
18 g3->SetParameters(1,0,1,0,1,0,1);
19 h1->FillRandom("gaus3");
21 TH3F * h2 = new TH3F("h2", "h2", 10, -1., 1., 10, -1., 1., 10, -1., 1.);
22 TF3 * l3 = new TF3("landau3","landau(x,[0],[1],[2])*gaus(y,1,[3],[4])*gaus(z,1,[3],[4])");
23 l3->SetParameters(1,0,1,0.,0.5);
24 h2->FillRandom("landau3");
25 h2->SetFillColor(kGreen);
26 TH3F * h3 = new TH3F("h3", "h3", 10, -1., 1., 10, -1., 1., 10, -1., 1.);
27 TF3 * gx = new TF3("gaus1","gaus(x)");
28 gx->SetParameters(1,0,1);
29 h3->FillRandom("gaus1");
30 h3->SetFillColor(kBlue);
31
32 comp->AddTH3(h1);
34 comp->AddTH3(h3);
35
36 comp->Draw();
37
38 TPaveLabel *title = new TPaveLabel(0.04, 0.86, 0.96, 0.98,
39 "TH3 composition.");
40 title->SetFillColor(32);
41 title->Draw();
42}
constexpr Bool_t kTRUE
Definition RtypesCore.h:100
@ kRed
Definition Rtypes.h:66
@ kGreen
Definition Rtypes.h:66
@ kBlue
Definition Rtypes.h:66
R__EXTERN TStyle * gStyle
Definition TStyle.h:433
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition TAttFill.h:37
virtual void SetParameters(const Double_t *params)
Definition TF1.h:670
A 3-Dim function with parameters.
Definition TF3.h:28
void AddTH3(const TH3 *hist, ETH3BinShape shape=kBox)
Add TH3 into collection.
virtual void FillRandom(const char *fname, Int_t ntimes=5000, TRandom *rng=nullptr)
Fill histogram following distribution in function fname.
Definition TH1.cxx:3515
void Draw(Option_t *option="") override
Draw this histogram with options.
Definition TH1.cxx:3062
3-D histogram with a float per channel (see TH1 documentation)
Definition TH3.h:305
A Pave (see TPave) with a text centered in the Pave.
Definition TPaveLabel.h:20
void Draw(Option_t *option="") override
Draw this pavelabel with its current attributes.
void SetCanvasPreferGL(Bool_t prefer=kTRUE)
Definition TStyle.h:339
TH1F * h1
Definition legend1.C:5