Reposition Color Legend TH2 Lego Draw

Newbie
1

Hi,

How to move the color legend in TH2 lego like this:

c
c958×616 25.6 KB

to this:
ccor
ccor958×616 25.6 KB

inside the code?

Notice that “6” was overlapped with the color legend in the first figure. I know we can move it manually in canvas, but how to do it in code?

Also, “0” and “5” touch each other. How to give some space?

Thanks

2

Hi,

You can do it with

palette->SetX1NDC(palette->GetX1NDC()+0.05);
palette->SetX2NDC(palette->GetX2NDC()+0.05);

, here is the full example:

        TCanvas* c1 = new TCanvas("c1", "My awesome plot", 0, 0, 800, 600);
        c1->SetRightMargin(0.18); // to be able to see the z axis title
        TH2F *myHist = new TH2F("myHist", "My histogram;#Delta#phi;#Delta#eta;C(#Delta#eta, #Delta#phi)", 24, -6., +6., 20, -5., +5.);
        myHist->Fill(3., 3., 2500.);
        myHist->Fill(-3., -3., 10.);

        myHist->Draw("LEGO2 COLZ");

        gPad->Update(); // to be able to retrieve the palette pointer

        TPaletteAxis *palette = static_cast<TPaletteAxis*>(myHist->GetListOfFunctions()->FindObject("palette"));
        if (palette)
        {
                palette->SetX1NDC(palette->GetX1NDC()+0.05); // shift x1 by 0.05 to the right
                palette->SetX2NDC(palette->GetX2NDC()+0.05); // shift x2 by 0.05 to the right
        }


        gPad->Update(); gPad->Modified();