Example of macro illustrating how to superimpose two histograms with different scales in the "same" pad.
Inspired by work of Rene Brun.
å!
import matplotlib.pyplot as plt
import mplhep as hep
import numpy as np
import ROOT
np.random.seed(0)
plt.style.use(hep.style.ROOT)
fig, ax1 = plt.subplots(figsize=(10, 6))
h1 = ROOT.TH1F("h1", "my histogram", 100, -3, 3)
h1[...] = np.histogram(np.random.normal(0, 1, 10000), range=(-3, 3), bins=100)[0]
hep.histplot(h1, ax=ax1, histtype="fill", color="white", edgecolor="blue", linewidth=1.5, alpha=0.5)
hint1 = ROOT.TH1F("hint1", "h1 bins integral", 100, -3, 3)
hint1[...] = np.cumsum(h1.values())
ax2 = ax1.twinx()
hep.histplot(hint1, ax=ax2, histtype="errorbar", color="red", marker="+", markersize=3)
ax1.set_xlim(-3, 3)
plt.title("Histogram with Cumulative Sum")
plt.show()
- Date
- July 2025
- Author
- Alberto Ferro, Nursena Bitirgen
Definition in file hist010_TH1_two_scales_uhi.py.
