#!/usr/bin/env python
# coding: utf-8

# # twoscales
# Example of macro illustrating how to superimpose two histograms
# with different scales in the "same" pad.
# Inspired by work of Rene Brun.
# 
# 
# 
# 
# **Author:** Alberto Ferro  
# <i><small>This notebook tutorial was automatically generated with <a href= "https://github.com/root-project/root/blob/master/documentation/doxygen/converttonotebook.py">ROOTBOOK-izer</a> from the macro found in the ROOT repository  on Wednesday, April 17, 2024 at 11:13 AM.</small></i>

# nclude "TCanvas.h"
# nclude "TStyle.h"
# nclude "TH1.h"
# nclude "TGaxis.h"
# nclude "TRandom.h"

# In[1]:


import ROOT

c1 = ROOT.TCanvas("c1","hists with different scales",600,400)

ROOT.gStyle.SetOptStat(False)

h1 = ROOT.TH1F("h1","my histogram",100,-3,3)

for i in range(10000) :
    h1.Fill(ROOT.gRandom.Gaus(0,1))

h1.Draw()
c1.Update()

hint1 = ROOT.TH1F("hint1","h1 bins integral",100,-3,3)

sum = 0
for i in range(1,101) :
   sum += h1.GetBinContent(i)
   hint1.SetBinContent(i,sum)

rightmax = 1.1*hint1.GetMaximum()
scale = ROOT.gPad.GetUymax()/rightmax
hint1.SetLineColor(ROOT.kRed)
hint1.Scale(scale)
hint1.Draw("same")

axis = ROOT.TGaxis(ROOT.gPad.GetUxmax(),ROOT.gPad.GetUymin(),
      ROOT.gPad.GetUxmax(), ROOT.gPad.GetUymax(),0,rightmax,510,"+L")
axis.SetLineColor(ROOT.kRed)
axis.SetLabelColor(ROOT.kRed)
axis.Draw()


# Draw all canvases 

# In[2]:


from ROOT import gROOT 
gROOT.GetListOfCanvases().Draw()