Plot shown by TBrowser and drawn are not the same. Why?

ROOT
1

Dear All,

I have a .root file with 2 TGraphs in it. When I want to draw them from a macro, they look different than shown by TBrowser. Let’s see the Room temperature graph. As you can see on drawnbymacro.png there are some peaks around 1265x10^6 which should not be there (and TBrowser shows it correctly). I experienced this issue with ROOT 5 and 6 as well. A short code is attached which can reproduce the problem. Do you have any idea what causes this?

Thank you!

draw.C (1.3 KB)
histos.root (428.8 KB)

2

For new users only 2 links are allowed so here is a new post with the plots.
drawnbymacro|690x356
drawnbytbrowser|690x359

3 
{
  TFile *f = TFile::Open("histos.root");
  TGraph *g1; f->GetObject("Crystal temperature", g1);
  TGraph *g2; f->GetObject("Room temperature", g2);
  TCanvas *c = new TCanvas("c", "Temperature-mean correlation", 2000, 1000);
  c->Divide(2, 1);
  c->cd(1);
  g1->Draw("AL");
  c->cd(2);
  g2->Draw("AL");
  c->cd(0);
}
4

Hi
this is due to the option “C” in Draw,
att a zoom of the region
C_Room_temperature_1.pdf (56.9 KB)
Otto

5

Thank you for the fast answer guys, it is working now as expected!