doc/master/labels1_8C.html

void labels1()

{

   Int_t i;

   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->SetBottomMargin(0.15);

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

   h->SetFillColor(38);

   for (i=0;i<5000;i++) h->Fill(gRandom->Gaus(0.5*nx,0.2*nx));

   h->SetStats(0);

   for (i=1;i<=nx;i++) h->GetXaxis()->SetBinLabel(i,people[i-1]);

   h->Draw();

   TPaveText *pt = new TPaveText(0.6,0.7,0.98,0.98,"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();

}

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

Int_t
int Int_t
Definition RtypesCore.h:45

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:42

TCanvas
The Canvas class.
Definition TCanvas.h:23

TH1F
1-D histogram with a float per channel (see TH1 documentation)
Definition TH1.h:622

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:191

TPaveText::Draw
void Draw(Option_t *option="") override
Draw this pavetext with its current attributes.
Definition TPaveText.cxx:242

TRandom::Gaus
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:275

pt
TPaveText * pt
Definition entrylist_figure1.C:7

c1
return c1
Definition legend1.C:41