Two fit boxes on one canvas

[bethlong06]

I have a TGraphErrors which has two separate distributions in it, which I therefore fit with two pol0s. I would like to be able to draw the fit boxes of these two distributions. Currently what I have doesn’t give me errors, but it seems to put the result from the second fit in the first fit box, as seen in the attached image.
How can I make this work? Thanks in advance

Double_t pol0f(Double_t *x, Double_t *par) {
  return par[0];
}

void MWE(){
  
  gStyle->SetOptStat(1110);
  gStyle->SetOptFit(0001);
  
  TGraphErrors* ge1 = new TGraphErrors();

  TRandom3 *myRNG=new TRandom3();
  myRNG->SetSeed(1);
  
  for(int ii=0;ii<100;ii++)
    {
      double rand = myRNG->Gaus(100,0.01);
      double rand2 = myRNG->Gaus(200,0.01);
      if(ii<50) ge1->SetPoint(ii,ii,rand);
      else ge1->SetPoint(ii,ii,rand2);
    }

  TCanvas* c1 = new TCanvas("c1","c1",900,700);
  ge1->Draw("AP");
  ge1->SetMarkerStyle(kStar);
  
  TF1 *lowfunc = new TF1("lowfit","pol0f",20,47,1);
  lowfunc->SetParName(0,"Low");
  lowfunc->SetLineColor(kRed);
  lowfunc->Draw("same");
  ge1->Fit("lowfit","R");
  lowfunc->SetLineWidth(4);

  c1->Modified();
  c1->Update();

  TPaveStats *sLow = (TPaveStats*)ge1->FindObject("stats");
  sLow->SetName("sLow");

  TF1 *highfunc = new TF1("highfit","pol0f",50,70,1);
  highfunc->SetParName(0,"High");
  highfunc->SetLineColor(kRed);
  highfunc->Draw("same");
  ge1->Fit("highfit","R");   
  highfunc->SetLineWidth(4);

  TPaveStats *sHigh = (TPaveStats*)sLow->Clone();
  sHigh->SetName("sHigh");

}

[bethlong06]

I’m bumping this because unfortunately I need an answer relatively urgently, I hope there’s enough information here to understand and answer the question, but if not please let me know!

[couet]

If the stat boxes are overlapping (check interactively). you ill need to move one.

[bethlong06]

I checked, but there’s only one, and one of the things I don’t understand is that the box called sLow has the label I tried to add to sHigh, as you can see in the picture above

[vpadulan]

You forgot to

sHigh->Draw()

In your code. Then both will appear, you just have to drag one

I don’t remember by heart the function to call to move the TPaveStats to some location directly within your macro, you can check the documentation.

Cheers,
Vincenzo

[bethlong06]

Super helpful, thank you for pointing out that stupid error! Not that it matters particularly but the stats boxes have strange names: the one that should be called sHigh is called sLow and the one that should be called sHigh is called sLow

[couet]

@vpadulan

I don’t remember by heart the function to call to move the TPaveStats to some location directly within your macro, you can check the documentation.

Here it is: ROOT: tutorials/hist/transpad.C File Reference