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我们将在本教程中学习饼图。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label)
plt.show()

语法

matplotlib.pyplot.pie(
    x,
    explode=None,
    labels=None,
    colors=None,
    autopct=None,
    pctdistance=0.6,
    shadow=False,
    labeldistance=1.1,
    startangle=None,
    radius=None,
    counterclock=True,
    wedgeprops=None,
    textprops=None,
    center=(0, 0),
    frame=False,
    hold=None,
    data=None,
)

参数

顺时针方向绘制的饼图

如果参数 counterclock 设置为 False，则饼形图将按顺时针方向绘制。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label, counterclock=False)
plt.show()

饼图与爆炸切片

explode 参数控制饼图中的切片爆炸。它指定偏移每个楔形的半径的分数。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label, explode=(0.2, 0, 0, 0))
plt.show()