Python 使用 Matplotlib 做圖時,如何畫豎直和水平的分割線或者點畫線或者直線?


作者:看看
鏈接:https://www.zhihu.com/question/21929761/answer/164975814

可以使用:

vlines(x, ymin, ymax)

hlines(y, xmin, xmax)

import matplotlib.pyplot as plt import numpy as np def Laplacian_Prior(x, u, b): return 1.0/(2*b)*np.exp(-abs(x - u)/b) if __name__ == "__main__": x = np.arange(-10, 10, 0.01) y_1 = Laplacian_Prior(x, 0, 1) y_2 = Laplacian_Prior(x, 0, 2) y_3 = Laplacian_Prior(x, 0, 4) y_4 = Laplacian_Prior(x, -5, 4) plt.plot(x, y_1, "r-") plt.plot(x, y_2, "k-") plt.plot(x, y_3, "b-") plt.plot(x, y_4, "g-") plt.vlines(0, 0, 0.5, colors = "c", linestyles = "dashed") 



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