AddText in TPaveStats of histogram

[daniel_0]

Hello.

In my case, I’d like to add a text line in the stats box as well, but I’m working with a THStack. I display two stats boxes as indicated here in the forth entry (I’m dealing with two histograms):

How can I show stats box, when using THStack?

I have modified your example to generate teh “stat” box for each histogram in the stack at 3 different positions Rene void test_stack() { THStack *hs = new THStack(“hs”, “test”); TH1F h[3]; for ( Int_t i = 0; i < 3; i++ ) { h[i] = new TH1F(Form(“h%d”, i), Form(“test h%d”), 50, -5, 5); h[i]->FillRandom(“gaus”); h[i]->SetLineColor(2i+2); hs->Add(h[i],“sames”); } hs->Draw(“ehist nostack”); //the following lines will force the stats for h[1] and h[2] //to be drawn at a different positio…

Then, I tried (h1_firCorrectionf1, h1_firCorrectionf2 are the histograms; st1, st2 are the TPaveStats intances from them):

h1_firCorrectionf1->SetBit(TH1::kNoStats);
st1->AddText("Xpeakf1   "+xf1);
st1->Draw();
gPad->Modified();

but the new line is not drawn in the canvas. It’s added as it can be seen with st1->Print();

TPaveStats  X1=1665.800065 Y1=516.185451 X2=2302.800084 Y2=638.540518 FillStyle=1001
Collection name='TList', class='TList', size=5
 Text  X=0.000000 Y=0.000000 Text=h1_firCorrection_0f1 Font=0 Size=0.036800 Color=0 Align=0
 Text  X=0.000000 Y=0.000000 Text=Entries = 2736    Font=0 Size=0.000000 Color=0 Align=0
 Text  X=0.000000 Y=0.000000 Text=Mean  =  6.713 Font=0 Size=0.000000 Color=0 Align=0
 Text  X=0.000000 Y=0.000000 Text=RMS   =  208.1 Font=0 Size=0.000000 Color=0 Align=0
 Text  X=0.000000 Y=0.000000 Text=Xpeakf1	-53 Font=0 Size=0.000000 Color=0 Align=0

I tried as well the following without success:

        TList* listf1 = st1->GetListOfLines();
        TList* listf2 = st2->GetListOfLines();
        TLatex* textf1 = new TLatex(0,0,"Xpeakf1        "+xf1);
        TLatex* textf2 = new TLatex(0,0,"Xpeakf2        "+xf2);
        listf1->Add(textf1);
        listf2->Add(textf2);
        st1->Print();   
        st2->Print(); 
        h1_firCorrectionf1->SetStats(0);
        h1_firCorrectionf2->SetStats(0);
        st1->Draw();
        st2->Draw();
        gPad->Modified();

and even though it’s not drawn, the print() shows that the line has been added as well.

Any suggestions?

Thank you!
Daniel