mathcoreStatFunc.C File Reference

Detailed Description

Example macro showing some major probability density functions in ROOT.

The macro shows four of them with respect to their two variables. In order to run the macro type:

root [0] .x mathcoreStatFunc.C

#include "TF2.h"
#include "TSystem.h"
#include "TCanvas.h"

void mathcoreStatFunc() {

   TF2 *f1a = new TF2("f1a","ROOT::Math::cauchy_pdf(x, y)",0,10,0,10);
   TF2 *f2a = new TF2("f2a","ROOT::Math::chisquared_pdf(x,y)",0,20, 0,20);
   TF2 *f3a = new TF2("f3a","ROOT::Math::gaussian_pdf(x,y)",0,10,0,5);
   TF2 *f4a = new TF2("f4a","ROOT::Math::tdistribution_pdf(x,y)",0,10,0,5);

   TCanvas *c1 = new TCanvas("c1","c1",800,650);

   c1->Divide(2,2);

   c1->cd(1); f1a->SetLineWidth(1);
   f1a->Draw("surf1");
   c1->cd(2); f2a->SetLineWidth(1);
   f2a->Draw("surf1");
   c1->cd(3); f3a->SetLineWidth(1);
   f3a->Draw("surf1");
   c1->cd(4); f4a->SetLineWidth(1);
   f4a->Draw("surf1");
}

Author

Andras Zsenei

Definition in file mathcoreStatFunc.C.