ROOT   6.08/07 Reference Guide
parallelcoord.C
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1 /// \file
2 /// \ingroup tutorial_tree
3 /// \notebook -nodraw
4 /// Script illustrating the use of the TParalleCoord class
5 ///
6 /// \macro_image
7 /// \macro_code
8 ///
9 /// \author Bastien Dallapiazza
10
11 #include "TFile.h"
12 #include "TCanvas.h"
13 #include "TStyle.h"
14 #include "TRandom.h"
15 #include "TNtuple.h"
16 #include "TParallelCoord.h"
17 #include "TParallelCoordVar.h"
18 #include "TParallelCoordRange.h"
19
20 Double_t r1,r2,r3,r4,r5,r6,r7,r8,r9;
21 Double_t dr = 3.5;
22 TRandom *r;
23
24 void generate_random(Int_t i) {
25  r1 = (2*dr*r->Rndm(i))-dr;
26  r2 = (2*dr*r->Rndm(i))-dr;
27  r7 = (2*dr*r->Rndm(i))-dr;
28  r9 = (2*dr*r->Rndm(i))-dr;
29  r4 = (2*dr*r->Rndm(i))-dr;
30  r3 = (2*dr*r->Rndm(i))-dr;
31  r5 = (2*dr*r->Rndm(i))-dr;
32  r6 = (2*dr*r->Rndm(i))-dr;
33  r8 = (2*dr*r->Rndm(i))-dr;
34 }
35
36 void parallelcoord() {
37
38  TNtuple *nt = NULL;
39
40  Double_t s1x, s1y, s1z;
41  Double_t s2x, s2y, s2z;
42  Double_t s3x, s3y, s3z;
43  r = new TRandom();;
44
45  new TCanvas("c1", "c1",0,0,800,700);
46
47  nt = new TNtuple("nt","Demo ntuple","x:y:z:u:v:w");
48
49  for (Int_t i=0; i<20000; i++) {
50  r->Sphere(s1x, s1y, s1z, 0.1);
51  r->Sphere(s2x, s2y, s2z, 0.2);
52  r->Sphere(s3x, s3y, s3z, 0.05);
53
54  generate_random(i);
55  nt->Fill(r1, r2, r3, r4, r5, r6);
56
57  generate_random(i);
58  nt->Fill(s1x, s1y, s1z, s2x, s2y, s2z);
59
60  generate_random(i);
61  nt->Fill(r1, r2, r3, r4, r5, r6);
62
63  generate_random(i);
64  nt->Fill(s2x-1, s2y-1, s2z, s1x+.5, s1y+.5, s1z+.5);
65
66  generate_random(i);
67  nt->Fill(r1, r2, r3, r4, r5, r6);
68
69  generate_random(i);
70  nt->Fill(s1x+1, s1y+1, s1z+1, s3x-2, s3y-2, s3z-2);
71
72  generate_random(i);
73  nt->Fill(r1, r2, r3, r4, r5, r6);
74  }
75  nt->Draw("x:y:z:u:v:w","","para",5000);
77  para->SetDotsSpacing(5);
78  TParallelCoordVar* firstaxis = (TParallelCoordVar*)para->GetVarList()->FindObject("x");
86 }
TParallelCoordSelect * GetCurrentSelection()
Return the selection currently being edited.
A TParallelCoordRange is a range used for parallel coordinates plots.
int Int_t
Definition: RtypesCore.h:41
virtual TObject * FindObject(const char *name) const
Find an object in this list using its name.
Definition: TList.cxx:497
TParallelCoord axes.
TList * GetVarList()
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:31
unsigned int r3[N_CITIES]
Definition: simanTSP.cxx:323
virtual Double_t Rndm()
Machine independent random number generator.
Definition: TRandom.cxx:512
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:46
TRandom2 r(17)
A simple TTree restricted to a list of float variables only.
Definition: TNtuple.h:30
unsigned int r1[N_CITIES]
Definition: simanTSP.cxx:321
The Canvas class.
Definition: TCanvas.h:41
double Double_t
Definition: RtypesCore.h:55
virtual void Draw(Option_t *opt)
Default Draw method for all objects.
Definition: TTree.h:367
virtual Int_t Fill()
Fill a Ntuple with current values in fArgs.
Definition: TNtuple.cxx:170
void SetDotsSpacing(Int_t s=0)
Set dots spacing.
virtual void Sphere(Double_t &x, Double_t &y, Double_t &z, Double_t r)
Generates random vectors, uniformly distributed over the surface of a sphere of given radius...
Definition: TRandom.cxx:588
Parallel Coordinates class.
Definition: Rtypes.h:62
#define NULL
Definition: Rtypes.h:82