Overlaying ProfileY on TH2D

Newbie
1

Hello Everyone,

I have these two plots that I would like to overlay on top of each other. But, some how I am unable to. Here is a pdf of the plots: overlayingPlots.pdf (154.8 KB)

What I want is for the ProfileY plot to be superimposed onto the TH2D plot. Here is my attempt:

cloneHistogram2->Draw("colz [cut1]");
TProfile* histo2ProfY1 = cloneHistogram2->ProfileY("histo2ProfY1", 0, -1, "[cut1]");
histo2ProfY1->SetLineWidth(2);
histo2ProfY1->SetLineColor(kBlack);
histo2ProfY1->Draw("SAME");

But that doesn’t seem to work, and from the searching around I have done, it seems like it is a problem related to the fact that I am using TProfileY and not TProfileX.

I also don’t really get the solution provided on the following thread from 2011, but there might be a more robust solution by now for this problem:

Can someone please help me with this? Thank you very much!

2

The plots do have very different axis ranges they will not overlay properly. Can you post the plot you get ?

3

I actually don’t end up being able to get a plot with the way I approach it. It only shows the 2D plot with no 1D overlay.

4

One point is that, as couet said, in your TProfile the scales of x-y don’t match the 2D plot, so even if you could do “same”, the second plot wouldn’t show --in fact, x and y are swapped, so you may want to swap them back if you want them to represent the same.
Anyway maybe you can try sometihng like this (create a second Pad on top of the first one and draw the second plot there):

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