要在Matplotlib中繪制分層條形圖以展示分組數據，可以使用以下步驟：
import matplotlib.pyplot as plt
import numpy as np
N = 5
menMeans = (20, 35, 30, 35, 27)
womenMeans = (25, 32, 34, 20, 25)
ind = np.arange(N)
width = 0.35
p1 = plt.bar(ind, menMeans, width)
p2 = plt.bar(ind, womenMeans, width, bottom=menMeans)
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()
這樣就可以在Matplotlib中繪制分層條形圖以展示分組數據。
