Superimposing TH2D

ROOT
#1

Hello,
I have two TH2D histograms. One shows interesting values, the second one would be used to “shade” a part of the first one (only 0 and 1 values).
I was happy drawing the first histogram with LEGO2POL options and setting the Logz. Now when I try to put somehow the second histogram on the top of the first one. I try the CONTSAME option but then I cannot rotate my histograms the way I wish. So I need a piece of advice from someone who had similar problem…

Thank you, Mariusz
#2

It might be some limitations in the drawing options. Do understand better what you are doing, can you post a simple running example showing what you are doing ?

#3

So I attach a rootfile with 2 TH2D histograms:
signals and simpose.

I usually plot signals with (“LEGO2POL”) option, then I make Logz and actually I rotate it so it looks flat (circle).
Now I would like to cover the bins which have content 1 in histogram simpose by some kind of shadow.
So I try to plot simpose with Draw(“SAME”) of COLZ or SURF1 but nothing works. Maybe you could propose something?

Thanks you a lot,

             Mariusz

90pCluster.root (5.3 KB)

#4

You can try:

signals.Draw(“LEGO2POL”)
simpose.Draw(“SURFPOLSAME”)

But I am not really what you would like to obtain so that might not be the answer.

#5

It is in a good direction, but not visible enough.
Why, when I plot superimposed histogram with options like SCAT, CONT, then I cannot rotate the histogram? (root 5.19).

Mariusz

#6

Scat and CONT are not 3D options … you cannot superimpose with a lego.
I do not understand what you want. I am sorry.

#7

I wanted something like on the attached plot.
Mariusz

RPhi_map_maxz_inj_v3.gif789×779 35.5 KB

#8

The best I could do is:

{
   TCanvas *c1 = new TCanvas("c1", "c1",600,600);
   c1->SetTheta(90);
   c1->SetPhi(90);
   gStyle->SetPalette(1);
   TFile f("90pCluster.root");
   signals.Draw("LEGO2POL");
   simpose.SetLineColor(2);
   simpose.Draw("SURFPOLSAME");
}