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#pylab 是扩展库matplotlib的一个模

 

import numpy as np

 

import pylab as pl

 

import matplotlib.font_manager as fm

 

myfont = fm.FontProperties(fname=r'C: \Windows\Fonts\STKAITI.ttf')

 

t = np.arange(8.8, 2.0xnp.pi, 0.01)

 

s=np.sin(t)

 

z=np.cos(t)

 

pl.plot(t,s, label='正弦')

 

pl.plot(t,z, label='余弦')

 

pl.xlabel('x-变量',fontproperties='STKAITI', fontsize=24)

 

pl.ylabel('y-正弦余弦函数值'，fontproperties='STKAITI', fontsize=24)pl.title('sin-cos 函数图像'，fontproperties='STKAITI', fontsize=32)pl.legend(prop=myfont)

 

pl.show()

 

import pylab as pl

 

a = pl.arange(e, 2.0*pl.pi, 0.1)

 

b =pl.cos(a)

 

pl.scatter(a,b)

 

pl.show()

 

#在 pylab巷

import numpy as np

 

import matplotlib.pylab as pl

 

x=np.random.random(100)

 

y = np.random,random(1e0)

 

pl.scatter(x, y, s=x*500, c='r', marker-'*")

 

pl.show()