Exemple 3
Executez le programme suivant.
import matplotlib.pyplot as plt
import numpy.random as rnd
#?##########################
muX, sigmaX = 120, 25
x = muX + sigmaX * rnd.randn(10000)
muY, sigmaY = 70, 10
y = muY + sigmaY * rnd.randn(10000)
plt.hist(x,2*sigmaX,normed=True,color='r',alpha=0.75)
plt.hist(y,2*sigmaY,normed=True,color='b',alpha=0.75)
plt.xlabel('Répartition')
plt.ylabel('Probabilités')
plt.title('Histogrammes')
plt.text(145,0.014,"µ=120, σ=25")
plt.text(85,0.034,"µ=70, σ=10")
plt.axis([40,170,0,0.04])
plt.grid(axis="y")
plt.show()