Date: Wed, 02 Mar 2005 14:01:27 +0100
Hi Julien,
We have a tutorial multigraph.C showing exactly this. I give a copy in the attachement as well as the result.
Rene Brun
Julien Bolmont wrote:
>
>
> Hi rooters,
>
>
> I have a canvas in which I draw 2 graphs using TMultiGraph. I fit these
> two graphs with "pol0".
> I'd like to print in the Canvas the two boxes with fit parameters but I
> get only one (the parameters of the second fit).
>
> How to print the two boxes with fit results ?
>
> root 4.02/00, Mac OS X.3.
>
> Thanks !
> Cheers,
> Julien
>
>
>
>
> ------------------------------------------------------------------------
>
>
>
>
>
>
> TCanvas *c2 = new TCanvas("title", "title", 9,44,699,499);
> c2->SetFillColor(kWhite);
> c2->SetFrameFillColor(kWhite);
> TH1F *hfname2 = c2->DrawFrame(0.2, 0, 1.8, 200);
> hfname2->SetTitle("Energy");
> hfname2->SetXTitle("Kl");
> hfname2->SetYTitle("E (keV)");
>
>
>
>
> TGraphErrors *gr2 = new TGraphErrors(9, KL, EN1, 0, ERREN1);
> gr2->SetMarkerStyle(5);
> gr2->SetMarkerColor(kBlue);
>
>
> TGraphErrors *gr3 = new TGraphErrors(9, KL, EN2, 0, ERREN2);
> gr3->SetMarkerStyle(5);
> gr3->SetMarkerColor(kRed);
>
>
> TMultiGraph *mg = new TMultiGraph();
> mg->Add(gr2);
> mg->Add(gr3);
> mg->Draw("P");
>
>
> gr2->Fit("pol0");
> TF1 *fline2 = gr2->GetFunction("pol0");
> fline2->SetLineColor(kBlue);
> gr3->Fit("pol0");
> TF1 *fline3 = gr3->GetFunction("pol0");
> fline3->SetLineColor(kRed);
>
- text/x-c++ attachment: multigraph.C
