doc/v618/hlabels1_8C.html

TCanvas *hlabels1()

{

   const Int_t nx = 20;

   const char *people[nx] = {"Jean","Pierre","Marie","Odile","Sebastien",

      "Fons","Rene","Nicolas","Xavier","Greg","Bjarne","Anton","Otto",

      "Eddy","Peter","Pasha","Philippe","Suzanne","Jeff","Valery"};

   TCanvas *c1 = new TCanvas("c1","demo bin labels",10,10,900,500);

   c1->SetGrid();

   c1->SetTopMargin(0.15);

   TH1F *h = new TH1F("h","test",3,0,3);

   h->SetStats(0);

   h->SetFillColor(38);

   h->SetCanExtend(TH1::kAllAxes);

   for (Int_t i=0;i<5000;i++) {

      Int_t r = gRandom->Rndm()*20;

      h->Fill(people[r],1);

   }

   h->LabelsDeflate();

   h->Draw();

   TPaveText *pt = new TPaveText(0.7,0.85,0.98,0.98,"brNDC");

   pt->SetFillColor(18);

   pt->SetTextAlign(12);

   pt->AddText("Use the axis Context Menu LabelsOption");

   pt->AddText(" \"a\"   to sort by alphabetic order");

   pt->AddText(" \">\"   to sort by decreasing values");

   pt->AddText(" \"<\"   to sort by increasing values");

   pt->Draw();

   return c1;

}

r
ROOT::R::TRInterface & r
Definition: Object.C:4

h
#define h(i)
Definition: RSha256.hxx:106

Int_t
int Int_t
Definition: RtypesCore.h:41

gRandom
R__EXTERN TRandom * gRandom
Definition: TRandom.h:62

TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37

TAttText::SetTextAlign
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition: TAttText.h:41

TCanvas
The Canvas class.
Definition: TCanvas.h:31

TH1F
1-D histogram with a float per channel (see TH1 documentation)}
Definition: TH1.h:571

TH1::kAllAxes
@ kAllAxes
Definition: TH1.h:73

TPaveText
A Pave (see TPave) with text, lines or/and boxes inside.
Definition: TPaveText.h:21

TPaveText::AddText
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:182

TPaveText::Draw
virtual void Draw(Option_t *option="")
Draw this pavetext with its current attributes.
Definition: TPaveText.cxx:233

TRandom::Rndm
virtual Double_t Rndm()
Machine independent random number generator.
Definition: TRandom.cxx:541

pt
TPaveText * pt
Definition: entrylist_figure1.C:7

c1
return c1
Definition: legend1.C:41