Hello,
I am trying to display the fit statistics for a fitted graph using gStyle->SetOptFit(1111);, but for some reason, the fit stats are not displaying on the graph.
test.cxx (1.5 KB)
data.txt (59 Bytes)
ROOT Version: 6.23
void test(){
gStyle->SetOptFit(1111);
auto c = new TCanvas();
c->SetGrid();
auto graph = new TGraphErrors("./data.txt","%lg %lg %lg %lg");
graph->SetMarkerStyle(kCircle);
graph->SetFillColor(0);
graph->SetTitle("Test");
graph->Draw("PEA");
auto g = new TF1("Quadratic Fit","[0]+[1]*x+[2]*x**2",0.,10.);
g->Print();
g->SetParameters(0,0,1);
g->SetLineColor(kRed);
graph->Fit(g,"M","",0.,10.);
graph->Print();
auto leg = new TLegend(.1,.7,.3,.9,"Test");
leg->SetFillColor(0);
leg->AddEntry(graph,"Measured Points");
leg->AddEntry(g,"Fit");
leg->Draw();
auto text = new TLatex(4.,5.,"f(x)=p_{0}+p_{1}x+p_{2}x^{2}");
text->Draw();
gPad->Update();
TPaveStats *ps = (TPaveStats*)graph->GetListOfFunctions()->FindObject("stats");
ps->SetX1NDC(0.35);
ps->SetX2NDC(0.6);
ps->SetY1NDC(0.55);
ps->SetY2NDC(0.8);
gPad->Modified();
gPad->Update();
}
1 Like
Thank you very much!