棒グラフ

matplotlib での棒グラフの例

../../../_images/plot_bar_ex_1.png

Python ソースコード: plot_bar_ex.py

import numpy as np

import matplotlib.pyplot as plt



n = 12

X = np.arange(n)

Y1 = (1 - X / float(n)) * np.random.uniform(0.5, 1.0, n)

Y2 = (1 - X / float(n)) * np.random.uniform(0.5, 1.0, n)



plt.axes([0.025, 0.025, 0.95, 0.95])

plt.bar(X, +Y1, facecolor='#9999ff', edgecolor='white')

plt.bar(X, -Y2, facecolor='#ff9999', edgecolor='white')



for x, y in zip(X, Y1):

    plt.text(x + 0.4, y + 0.05, '%.2f' % y, ha='center', va= 'bottom')



for x, y in zip(X, Y2):

    plt.text(x + 0.4, -y - 0.05, '%.2f' % y, ha='center', va= 'top')



plt.xlim(-.5, n)

plt.xticks(())

plt.ylim(-1.25, 1.25)

plt.yticks(())



plt.show()

Total running time of the example: 0.12 seconds ( 0 minutes 0.12 seconds)