Python画图学习入门教程

#!/usr/bin/env python
import matplotlib.pyplot as plt
plt.plot([10, 20, 30])
plt.xlabel('tiems')
plt.ylabel('numbers')
plt.show()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from pylab import *
# make a square figure and axes
figure(1, figsize=(6,6))
ax = axes([0.1, 0.1, 0.8, 0.8])
labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
fracs = [15,30,45, 10]
explode=(0, 0.05, 0, 0)
pie(fracs, explode=explode, labels=labels, autopct='%1.1f%%', shadow=True)
title('Raining Hogs and Dogs', bbox={'facecolor':'0.8', 'pad':5})
savefig('D:\\pie.png')
show()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt
t = np.arange(0.0, 1.01, 0.01)
s = np.sin(2*2*np.pi*t)
plt.fill(t, s*np.exp(-5*t), 'r')
plt.grid(True)
#保存为PDF格式，也可保存为PNG等图形格式
plt.savefig('D:\\test.pdf')
plt.show()