#include "TROOT.h"
#include "TMath.h"
#include "TCanvas.h"
#include "TLegend.h"
#include "TGraphErrors.h"
#include "TLatex.h"
#include "TFile.h"
using namespace std;
void fnbd1()
{
      TCanvas* mycanvas = new TCanvas();
TGraphErrors *g1 = new TGraphErrors("opaltsallis.dat");
g1->SetMarkerStyle(24);
g1->SetMarkerSize(.9);
g1->SetMarkerColor(1);
g1->SetLineColor(2);
g1->Draw("AC");



TLegend *mL=new TLegend(0.4,0.53,0.7,0.7,"");
mL->SetTextSize(0.024);

mL->AddEntry(g2, "q value", "lep");

mL->Draw();

}