【Python】Matplotlib画图（三）——分段函数

环境

Python3

Mac OS

代码

# coding:utf-8"""Author: roguesirDate: 2017/8/30GitHub: https://roguesir.github.comBlog: http://blog.csdn.net/roguesir"""import numpy as npimport matplotlib.pyplot as pltdef sgn(value):if value < 4:return 20else:return 15plt.figure(figsize=(6,4))x = np.linspace(0, 8, 100)y = np.array([])for v in x:y = np.append(y,np.linspace(sgn(v),sgn(v),1))l=plt.plot(x,y,'b',label='type')plt.legend()plt.show()

输出