Matplotlib编程实现
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.patches import Rectangle, Shadow, Wedge
fig, ax = plt.subplots(subplot_kw={"aspect":"equal"})
font_style = {"family": "serif", "size": 12, "style": "italic", "weight": "black"}
sample_data = [350, 150, 200, 300]
total = sum(sample_data)
percents = [i/float(total) for i in sample_data]
angles = [360*i for i in percents]
delta = 45
wedge1 = Wedge((2, 2.5), 1, delta, delta+sum(angles[0:1]), facecolor="#00FFCC", edgecolor="white", width=0.3)
wedge2 = Wedge((2, 2.5), 1, delta+sum(angles[0:1]), delta+sum(angles[0:2]), facecolor="#FF0000",
edgecolor="white", width=0.3)
wedge3 = Wedge((2, 2.5), 1, delta+sum(angles[0:2]), delta+sum(angles[0:3]), facecolor="#FFFF00",
edgecolor="white", width=0.3)
wedge4 = Wedge((2, 2.5), 1, delta+sum(angles[0:3]), delta, facecolor="#9900FF", edgecolor="white", width=0.3)
rectangle1 = Rectangle((3.0, 0.3), 1.3, 1.3, facecolor="w", edgecolor="rosybrown")
rectangle2 = Rectangle((3.2, 0.4), 0.3, 0.2, facecolor="#00FFCC")
rectangle3 = Rectangle((3.2, 0.7), 0.3, 0.2, facecolor="#FF0000")
rectangle4 = Rectangle((3.2, 1.0), 0.3, 0.2, facecolor="#FFFF00")
rectangle5 = Rectangle((3.2, 1.3), 0.3, 0.2, facecolor="#9900FF")
wedges = [wedge1, wedge2, wedge3, wedge4, rectangle1, rectangle2, rectangle3, rectangle4, rectangle5]
for wedge in wedges:
ax.add_patch(wedge)
ax.text(3.6, 0.4, "%3.1f%%" % (percents[0]*100), **font_style)
ax.text(3.6, 0.7, "%3.1f%%" % (percents[1]*100), **font_style)
ax.text(3.6, 1.0, "%3.1f%%" % (percents[2]*100), **font_style)
ax.text(3.6, 1.3, "%3.1f%%" % (percents[3]*100), **font_style)
ax.axis([0, 4.5, 0, 4.5])
plt.show()
