Revision 6bef5d95c9c192b6cb1ddcb0cc19ca28e897739d authored by Rene Brun on 06 April 2005, 15:56:14 UTC, committed by Rene Brun on 06 April 2005, 15:56:14 UTC
Template implementation should be in header files (especially when the template class contains a ClassDef). git-svn-id: http://root.cern.ch/svn/root/trunk@11511 27541ba8-7e3a-0410-8455-c3a389f83636
1 parent 854d6f8
fit2d.C
void fit2d()
{
//example illustrating how to fit a 2-d histogram of type y=f(x)
// generate a 2-d histogram using a TCutG
const Int_t n = 6;
Float_t x[n] = {0.092,0.83,0.94,0.81,0.12,0.1};
Float_t y[n] = {0.71,9.4,9,8,0.3,0.71};
TCutG *cut = new TCutG("cut",n,x,y);
TH2F *h2 = new TH2F("h2","h2",40,0,1,40,0,10);
Float_t u,v;
for (Int_t i=0;i<100000;i++) {
u = gRandom->Rndm();
v = 10*gRandom->Rndm();
if (cut->IsInside(u,v)) h2->Fill(u,v);
}
TCanvas *c1 = new TCanvas("c1","show profile",600,900);
c1->Divide(1,2);
c1->cd(1);
h2->Draw();
c1->cd(2);
//use a TProfile to convert the 2-d to 1-d problem
TProfile *prof = h2->ProfileX();
prof->Fit("pol1");
}
![swh spinner](/static/img/swh-spinner.gif)
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