本文中讲解如何画堆积条形柱状图
import numpy as np
import matplotlib
import matplotlib.pyplot as plt
N = 5
menMeans = (20, 35, 28, 30, 25)
womenMeans = (25, 45, 28, 36, 10)
menStd = (2, 3, 4, 1, 2)
womenStd = (3, 5, 2, 3, 3)
ind = np.arange(N)
width = 0.6
p1 = plt.bar(ind, menMeans, width, yerr=menStd)
p2 = plt.bar(ind, womenMeans, width, bottom=menMeans, yerr=womenStd)
plt.ylabel("Scores")
plt.title("Scores by group and gender")
plt.xticks(ind, ("G1", "G2", "G3", "G4", "G5"))
plt.yticks(np.arange(0, 81, 10))
plt.legend((p1[0], p2[0]), ('Men', 'Women'))
plt.show()