matplotlib下载及API手册地址:http://sourceforge.net/projects/matplotlib/files/matplotlib/
数学库numpy下载及API手册地址:http://www.scipy.org/Download
几个绘图的例子【来自API手册】
1、最简单的图:
代码:
#!/usr/bin/env python import matplotlib.pyplot as plt plt.plot([10, 20, 30]) plt.xlabel('tiems') plt.ylabel('numbers') plt.show()
测试:
2.饼图:
代码:
#!/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()
测试:
3、使用numpy库函数:
代码:
#!/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()
测试:
from:
ref:
Python:使用matplotlib绘制图表
时间: 2024-10-19 14:17:16