3.2 定义图表类型

 1 from matplotlib.pyplot import *
 2 x = [1, 2, 3, 4]
 3 y = [5, 4, 3, 2]
 4 
 5 figure()
 6 subplot(231)
 7 plot(x,y)
 8 
 9 subplot(232)
10 bar(x,y)
11 
12 subplot(233)
13 barh(x,y)
14 
15 subplot(234)
16 bar(y,x)
17 
18 y1= [7, 8, 5, 3]
19 bar(x, y1, bottom=y, color=‘r‘)
20 subplot(235)
21 boxplot(x)
22 
23 subplot(236)
24 scatter(x,y)
25 
26 show()