06-matplotlib-饼状图

 1 import numpy as np
 2 import matplotlib.pyplot as plt
 3 
 4 '''
 5     饼状图显示一个数据系列中各项总和的比例；
 6     饼状图中的数据点显示为整个饼状图的百分比；
 7     如：前十大品牌占市场份额图
 8     
 9 '''
10 # 例
11 labels = 'A','B','C','D'
12 fracs = [15.0,30.0,45.0,10.0]
13 
14 explode = [0,0.05,0,0.08]
15 plt.axes(aspect=1)
16 plt.pie(x=fracs,labels=labels,autopct="%.0f%%",explode=explode,shadow=True)
17 plt.show()
18 
19 # 练习
20 labels = 'SH','BJ','SZ','GZ'
21 fracs = [20,30,25,15]
22 explode = [0,0,0.08,0]
23 plt.pie(x= fracs,labels=labels,autopct='%.00f%%',explode=explode,shadow=True)
24 plt.show()