Hide TPaveStats from TMultigraph

ROOT
1

Hi everyone,
I’m trying two fit three function using three different TGraphErrors and adding them later on a TMultigraph. I don’t want to show the stats box for the third graph (tgC); I just need to draw the function.
I cant’ figure out how I can achieve that.

    gStyle->SetOptFit(1111);
    TCanvas *tc = new TCanvas("tc","Test",700,500);

    TMultiGraph *tm = new TMultiGraph();

    TGraphErrors *tgA = new TGraphErrors("file_A.txt");
    TF1 * fitA = new TF1("fitA","pol1");
    fitA->SetLineColor(kBlue);
    tgA->Fit(fitA);

    TGraphErrors *tgC = new TGraphErrors("file_C.txt");
    TF1 * fitC = new TF1("fitC","pol0");
    fitC->SetLineColor(kMagenta); //Want to hide TPaveStats generated from here
    tgC->Fit(fitC);

    TGraphErrors *tgB = new TGraphErrors("file_B.txt");
    TF1 * fitB = new TF1("fitB","pol1");
    fitA->SetLineColor(kGreen);
    tgB->Fit(fitB);



    tm->Add(tgA); tgA->SetTitle("Graph A");
    tm->Add(tgB); tgB->SetTitle("Graph B");
    tm->Add(tgC); tgC->SetTitle("Graph C");

    tm->Draw("AP");

TMultigraph.gif1916×989 26.7 KB

2

Your macro gives me:

Error in <TGraphErrors::TGraphErrors>: Cannot open file: file_A.txt, TGraphErrors is Zombie
Warning in <Fit>: Fit data is empty 
Error in <TGraphErrors::TGraphErrors>: Cannot open file: file_C.txt, TGraphErrors is Zombie
Warning in <Fit>: Fit data is empty 
Error in <TGraphErrors::TGraphErrors>: Cannot open file: file_B.txt, TGraphErrors is Zombie
Warning in <Fit>: Fit data is empty 
Error in <TGraphPainter::PaintGraph>: illegal number of points (0)
Error in <TGraphPainter::PaintGraph>: illegal number of points (0)
Error in <TGraphPainter::PaintGraph>: illegal number of points (0)

Can you provide something I can run ?
Many Thanks.

3

Yes,
I did not attach file_A.txt, file_B.txt and file_C.txt.
The code is the same as on the first post.

Thanks,

Gianluca
file_C.txt (128 Bytes)
file_B.txt (128 Bytes)
file_A.txt (128 Bytes)

4

For me, the simplest would be:

    tm->Draw("AP");
    gPad->Modified(); gPad->Update(); // make sure it's (re)drawn
    TPaveStats *s = ((TPaveStats *)(tgC->FindObject("stats")));
    if (s) { s->SetX1NDC(-1); s->SetX2NDC(-1); } // get out of sight
    gPad->Modified(); gPad->Update(); // make sure it's (re)drawn
5

Thank you,
this solved my problem.

Gianluca