Hi,rooters, What I want to obtain is the random number (u,phi), which obey custom function g2. My code is :grinning: #include <TMath.h> #include <TGraph2D.h> #include <TRandom.h> #include <TStyle.h> #include <TCanvas.h> #include <TF2.h> #include <TH1.h> #include "TStopwatch.h" Double_t g2(Double…

About TF2 GetRandom2

dastudillo June 4, 2021, 4:13am 2

Randomness of TF1::GetRandom() Function ROOT

I am simulating cosmic ray muons, and I am randomly assigning their directions and energies based on fits to cosmic ray muon data. I have stored these fits as TF1’s, but I end up generating the exact same muons every time I run the program (IE when I run 50 jobs in parallel). I can explain this with the following terminal input: root -l root [0] TF1* f1 = new TF1(“f1”,“exp(x)”,1,5) root [1] f1->GetRandom() (Double_t)4.99974641411417942e+00 root [2] f1->GetRandom() (Double_t)3.275384890…

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