看了一下使用python绘制图表的方法,有个强大的类库matplotlib,可以制作出高质量的2D和3D图形,先记录一下,以后慢慢学习。 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: