You must force a call to
c1->Update();
before getting the "stats" box. The stats box is only generated when the objects
are effectively paint in the canvas.
Rene Brun
Manoj Jha wrote:
>
> Dear Rooters,
> I have tried to obtain a new statistic box using a script with the
> following lines
>
> [....]
>
> TPaveStats *st = (TPaveStats*)h2->GetListOfFunctions()->FindObject("stats");
> st->SetX1NDC (0.8);
> st->SetX2NDC (0.9);
>
> [...]
>
> I faced with the following error while I run the script
>
> ---------------------------------------------------------
> Error: illegal pointer to class object st 0x0 227 FILE:weight.C LINE:19
> *** Interpreter error recovered ***
> ------------------------------------------------------
>
> Could you please suggest me the possible solution for it ? I am also
> attaching the script for your convenience.
>
> Thanks,
> manoj
>
> --------------------------------------------------------------------------------
> {
> gROOT->Reset();
> c1 = new TCanvas("c1","The HSUM example",200,10,600,400);
> c1->SetGrid();
>
> Int_t type = 111; // Portrait
> TPostScript ps ("weight.ps", type);
> TFile f("CordinateDistributionShapedLead.root");
>
> h4->SetFillColor(42);
>
> h2->SetFillColor(46);
> h4->Draw();
> h4->SetTitle("L1 E_{T} Distribution of Crystal No. 4 & 2");
> h4->GetXaxis()->SetTitle("L1 E_{T} (in GeV)");
> h4->GetYaxis()->SetTitle("No. of Events");
> TPaveStats *st = (TPaveStats*)h2->GetListOfFunctions()->FindObject("stats");
> st->SetX1NDC (8);
> st->SetX2NDC (9);
> h2->Draw("sames");
> //h2->SetOptStat(0001111);
> c1.Update();
> /*
> h2->SetFillColor(46);
> h4->Draw();
> h2->Draw("same");
> c1.Update();
>
> h3->SetFillColor(46);
> h4->Draw();
> h3->Draw("same");
> c1.Update();
>
> h5->SetFillColor(46);
> h4->Draw();
> h5->Draw("same");
> c1.Update();
>
> h6->SetFillColor(46);
> h4->Draw();
> h6->Draw("same");
> c1.Update();
>
> h7->SetFillColor(46);
> h4->Draw();
> h7->Draw("same");
> c1.Update();
>
> h8->SetFillColor(46);
> h4->Draw();
> h8->Draw("same");
> c1.Update();
>
> h9->SetFillColor(46);
> h4->Draw();
> h9->Draw("same");
> c1.Update();
>
> h10->SetFillColor(46);
> h4->Draw();
> h10->Draw("same");
> c1.Update();
>
> h11->SetFillColor(46);
> h4->Draw();
> h11->Draw("same");
> c1.Update();
>
> h12->SetFillColor(46);
> h4->Draw();
> h12->Draw("same");
> c1.Update();
>
> h13->SetFillColor(46);
> h4->Draw();
> h13->Draw("same");
> c1.Update();
>
> h14->SetFillColor(46);
> h4->Draw();
> h14->Draw("same");
> c1.Update();
>
> h15->SetFillColor(46);
> h4->Draw();
> h15->Draw("same");
> c1.Update();
>
> h16->SetFillColor(46);
> h4->Draw();
> h16->Draw("same");
> c1.Update();
>
> h17->SetFillColor(46);
> h4->Draw();
> h17->Draw("same");
> c1.Update();
>
> h18->SetFillColor(46);
> h4->Draw();
> h18->Draw("same");
> c1.Update();
>
> h19->SetFillColor(46);
> h4->Draw();
> h19->Draw("same");
> c1.Update();
>
> h20->SetFillColor(46);
> h4->Draw();
> h20->Draw("same");
> c1.Update();
>
> h21->SetFillColor(46);
> h4->Draw();
> h21->Draw("same");
> c1.Update();
>
> h22->SetFillColor(46);
> h4->Draw();
> h22->Draw("same");
> c1.Update();
>
> h23->SetFillColor(46);
> h4->Draw();
> h23->Draw("same");
> c1.Update();
>
> h24->SetFillColor(46);
> h4->Draw();
> h24->Draw("same");
> c1.Update();
>
> h25->SetFillColor(46);
> h4->Draw();
> h25->Draw("same");
> c1.Update();
>
> h26->SetFillColor(46);
> h4->Draw();
> h26->Draw("same");
> c1.Update();
>
> h27->SetFillColor(46);
> h4->Draw();
> h27->Draw("same");
> c1.Update();
>
> */
> ps.Close();
>
> }
This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:10 MET