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Reference Guide
hlabels1.C
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1/// \file
2/// \ingroup tutorial_hist
3/// \notebook
4/// 1-D histograms with alphanumeric labels
5///
6/// \macro_image
7/// \macro_code
8///
9/// \author Rene Brun
10
11TCanvas *hlabels1()
12{
13 const Int_t nx = 20;
14 const char *people[nx] = {"Jean","Pierre","Marie","Odile","Sebastien",
15 "Fons","Rene","Nicolas","Xavier","Greg","Bjarne","Anton","Otto",
16 "Eddy","Peter","Pasha","Philippe","Suzanne","Jeff","Valery"};
17 TCanvas *c1 = new TCanvas("c1","demo bin labels",10,10,900,500);
18 c1->SetGrid();
19 c1->SetTopMargin(0.15);
20 TH1F *h = new TH1F("h","test",3,0,3);
21 h->SetStats(0);
22 h->SetFillColor(38);
23 h->SetCanExtend(TH1::kAllAxes);
24 for (Int_t i=0;i<5000;i++) {
25 Int_t r = gRandom->Rndm()*20;
26 h->Fill(people[r],1);
27 }
28 h->LabelsDeflate();
29 h->Draw();
30 TPaveText *pt = new TPaveText(0.7,0.85,0.98,0.98,"brNDC");
31 pt->SetFillColor(18);
32 pt->SetTextAlign(12);
33 pt->AddText("Use the axis Context Menu LabelsOption");
34 pt->AddText(" \"a\" to sort by alphabetic order");
35 pt->AddText(" \">\" to sort by decreasing values");
36 pt->AddText(" \"<\" to sort by increasing values");
37 pt->Draw();
38 return c1;
39}
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:45
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t r
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
1-D histogram with a float per channel (see TH1 documentation)}
Definition: TH1.h:577
@ kAllAxes
Definition: TH1.h:75
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
Double_t Rndm() override
Machine independent random number generator.
Definition: TRandom.cxx:552
TPaveText * pt
return c1
Definition: legend1.C:41