Python--matplotlib绘图可视化知识点整理
1.折线图:
import numpy as np import matplotlib.pyplot as plt from pylab import * x = np.arange(1.,2.,0.2) # 1到2,间隔0.2 y1 = np.arange(1.,2.,0.2) plt.figure(1) # 画一张图 plt.subplot(311) # 3行一列 plt.plot(x, y1,'r*') plt.subplot(312) plt.figure(1) plt.plot([1,2,3,4], [1,2,2,4],'bo') plt.subplot(313) # evenly sampled time at 200ms intervals t = np.arange(0., 5., 0.2) # red dashes, blue squares and green triangles plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^') plt.show() # 显示图片