How to force TRatioPlot to keep the same label

[calbet]

Dear experts,
I made a ratio plot with TRatioPlot but it does not keep the same label as you can see here (*). Do you know how I can ask it to keep the same label? The code is here (**).
Regards

(*)
before ratio:

after ratio:

(**)
complete code here:
http://calpas.web.cern.ch/calpas/comp.cc

[couet]

I cannot run your macro because the root is missing. Could you provide a small example reproducing the problem. It seems the ratio part of the plot ignores te fact the initial histogram had alphanumeric labels.

[calbet]

Dear Couet,
you can run it now. Please let me know if you need something else.
Regards

[couet]

Indeed you removed the path of the root files. but still I do not have the files and therefore I get the same kind of error.

[calbet]

The root files are here:
http://calpas.web.cern.ch/calpas/r1.root
http://calpas.web.cern.ch/calpas/r2.root

can’t you see them?

Regards

[couet]

Yes I see them. I will check.

[couet]

I see that the ratio part of the plot ignores te fact the initial histogram had alphanumeric labels. It is not implemented.

[calbet]

Ok, thank you. So how can I do it?

Regards

[couet]

I see you are drawing the ratio plots in a loop with option hist same…
I think that will mess up the plots. Can you try to do only one ratio plot ?
Not in a loop …

[calbet]

I made an array of ratio hitograms, then I loop

over this array to plot separately each ratio hist in a

canvas. I removed the “same” option, but I still do

not have the right label.

Regards

[calbet]

I would like to access the histogram of the ratio hist (not the graph), is it possible? If yes would CalculationMode(kDivideHist) allow me to do that? If yes how/where can I use it? Indeed, once I’ve access the histogram, I can set the x label myself with SetLabelSize.
Regards

[couet]

I am afraid that the alphanumeric labels histogram do not work with the current implementation of TRatioPlot.

{
   TFile *f = new TFile("r1.root");
   f->cd("ee");
   TH1D *h1 = (TH1D*) f->Get("ee/cutflow");
   TH1D *h2 = (TH1D*) f->Get("ee/cutflow_Loose");

   TCanvas *c = new TCanvas();
   TRatioPlot *rp = new TRatioPlot(h1, h2);
   rp->Draw();
}

I guess you should go back to the old way
https://root.cern/doc/master/ratioplotOld_8C.html

[calbet]

It is not possible to access the histogram?

Regards

[couet]

All the getters for TRatioPlot are listed here:
https://root.cern/doc/master/classTRatioPlot.html

[calbet]

Dear Couet,

ok, thank you for your help.

Regards