Logo ROOT  
Reference Guide
labels2.C File Reference

Detailed Description

View in nbviewer Open in SWAN
Setting alphanumeric labels.

void labels2()
Int_t i;
const Int_t nx = 12;
const Int_t ny = 20;
const char *month[nx] = {"January","February","March","April",
const char *people[ny] = {"Jean","Pierre","Marie","Odile",
TCanvas *c1 = new TCanvas("c1","demo bin labels",
TH2F *h = new TH2F("h","test",nx,0,nx,ny,0,ny);
for (i=0;i<5000;i++) {
for (i=1;i<=nx;i++) h->GetXaxis()->SetBinLabel(i,month[i-1]);
for (i=1;i<=ny;i++) h->GetYaxis()->SetBinLabel(i,people[i-1]);
TPaveText *pt = new TPaveText(0.6,0.85,0.98,0.98,"brNDC");
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");
#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:189
void Draw(Option_t *option="") override
Draw this pavetext with its current attributes.
Definition: TPaveText.cxx:240
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
Rene Brun

Definition in file labels2.C.