一轴上的3个直方图-Matplotlib Python

Question

I am trying to create a graph that has 3 histograms on one axis. I want them to overlap each with a different color. The insides are semi-transparent.

Whenever I use multiple colors like RGB with alpha 0.5, the colors overlap and create a nasty color.

How would I portray the 3 graphs without producing a nasty color? I still want the graphs to overlap in the same nature, just in a way that is aesthetically pleasing. I have seen graphs that overlap, but you can still see each histograms color distinctly. Thanks

Answer 1

You may use the colors from what you call "good graph" as follows:

import matplotlib.pyplot as plt
import numpy as np; np.random.seed(42)

x1 = np.random.rand(15)*3
x2 = np.random.rayleigh(size=15)
x3 = np.random.binomial(3,0.7,size=15)

bins= np.linspace(0,4,11)
kw = dict(bins=bins, histtype='step', fill=True)
plt.hist(x1, fc=(.14,.57,.14,.4), ec=(.14,.57,.14, 1), **kw)
plt.hist(x2, fc=(.16,.16,1.0,.4), ec=(.16,.16,1.0, 1), **kw)
plt.hist(x3, fc=(1.0,.14,.14,.4), ec=(1.0,.14,.14, 1), **kw)

plt.show()