{TNtuple calls("calls","calls","dev:rigidity");
calls.ReadFile("ev00100.dat");


TCanvas *fd3 = new TCanvas("fd3","canvas");
calls.Draw("dev:rigidity");

fd3->SetFillColor(42);
Graph->SetMarkerColor(4);
Graph->SetMarkerStyle(3);
htemp->SetTitle("10/11/04 ; rigidity ; % deviation");
htemp->GetXaxis()->CenterTitle();
htemp->GetYaxis()->CenterTitle();
gStyle->SetTitleFontSize(0.06);
htemp->GetXaxis()->SetTitleSize(0.05);
htemp->GetYaxis()->SetTitleSize(0.05);




f= new TF1("f", "[0]*x**[1]",0,30);

f->SetParNames("A","gamma");



Graph->Fit(f);
gStyle->SetStatH(0.17);
gStyle->SetStatW(0.1);
gStyle->SetOptStat(000001111);
gStyle->SetStatY(0.92);
gStyle->SetStatX(0.93);

}