Re: An obscure part in the User's Guide 4.04

From: Rene Brun <brun_at_pcroot.cern.ch>
Date: Thu, 11 Aug 2005 11:15:22 +0200 (MEST)

see a simple example below

Rene Brun

void simpleRandom() {

    TH1F *h1 = new TH1F("h1","original histogram",100,-5,15);     h1->FillRandom("landau",10000);
    TCanvas *c1 = new TCanvas("c1","c1",800,1000);

    c1->Divide(1,2);
    c1->cd(1);
    h1->Draw();
    c1->cd(2);

    TH1F *h2 = new TH1F("h2","generated histogram",100,-5,15);     for (Int_t i=0;i<1000;i++) {

       h2->Fill(h1->GetRandom());
    }
    h2->Draw();
}

On Mon, 1 Aug
2005, agrigor_at_henphyt.yerphi.am
wrote:

> Hi,
> Could anyone explain me how to work with
> the instructions from the part
> Random Numbers and Histograms (page 27) concerning
> the use of the own distribution (histogram h (TH1).
> 1. How should I use the GetRandom (nothing is explained there)?
> 2. How to handle practically with the existing? h histogram.
> Could anyone give me clear instriction? With an example,
> please.
> Thank you in advance for your answer,
> Ara
>
>
Received on Thu Aug 11 2005 - 11:15:29 MEST