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Reference Guide
labels2.C
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1/// \file
2/// \ingroup tutorial_graphs
3/// \notebook
4/// Setting alphanumeric labels.
5///
6/// \macro_image
7/// \macro_code
8///
9/// \author Rene Brun
10
11void labels2()
12{
13 Int_t i;
14 const Int_t nx = 12;
15 const Int_t ny = 20;
16 const char *month[nx] = {"January","February","March","April",
17 "May","June","July","August","September","October",
18 "November","December"};
19 const char *people[ny] = {"Jean","Pierre","Marie","Odile",
20 "Sebastien","Fons","Rene","Nicolas","Xavier","Greg",
21 "Bjarne","Anton","Otto","Eddy","Peter","Pasha",
22 "Philippe","Suzanne","Jeff","Valery"};
23 TCanvas *c1 = new TCanvas("c1","demo bin labels",
24 10,10,800,800);
25 c1->SetGrid();
26 c1->SetLeftMargin(0.15);
27 c1->SetBottomMargin(0.15);
28 TH2F *h = new TH2F("h","test",nx,0,nx,ny,0,ny);
29 for (i=0;i<5000;i++) {
30 h->Fill(gRandom->Gaus(0.5*nx,0.2*nx),
31 gRandom->Gaus(0.5*ny,0.2*ny));
32 }
33 h->SetStats(0);
34 for (i=1;i<=nx;i++) h->GetXaxis()->SetBinLabel(i,month[i-1]);
35 for (i=1;i<=ny;i++) h->GetYaxis()->SetBinLabel(i,people[i-1]);
36 h->Draw("text");
37
38 TPaveText *pt = new TPaveText(0.6,0.85,0.98,0.98,"brNDC");
39 pt->SetFillColor(18);
40 pt->SetTextAlign(12);
41 pt->AddText("Use the axis Context Menu LabelsOption");
42 pt->AddText(" \"a\" to sort by alphabetic order");
43 pt->AddText(" \">\" to sort by decreasing values");
44 pt->AddText(" \"<\" to sort by increasing values");
45 pt->Draw();
46}
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:45
R__EXTERN TRandom * gRandom
Definition: TRandom.h:62
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition: TAttText.h:42
The Canvas class.
Definition: TCanvas.h:23
2-D histogram with a float per channel (see TH1 documentation)}
Definition: TH2.h:257
A Pave (see TPave) with text, lines or/and boxes inside.
Definition: TPaveText.h:21
virtual TText * AddText(Double_t x1, Double_t y1, const char *label)
Add a new Text line to this pavetext at given coordinates.
Definition: TPaveText.cxx:187
void Draw(Option_t *option="") override
Draw this pavetext with its current attributes.
Definition: TPaveText.cxx:238
virtual Double_t Gaus(Double_t mean=0, Double_t sigma=1)
Samples a random number from the standard Normal (Gaussian) Distribution with the given mean and sigm...
Definition: TRandom.cxx:274
TPaveText * pt
return c1
Definition: legend1.C:41