How to add a grid line at a specific location in matplotlib plot?
Yes. It’s very simple. Use the set_[x|y]ticks methods of axes object and toggle the grid as normal: import matplotlib.pyplot as plt fig, ax = plt.subplots() ax.set_yticks([0.2, 0.6, 0.8], minor=False) ax.set_yticks([0.3, 0.55, 0.7], minor=True) ax.yaxis.grid(True, which=”major”) ax.yaxis.grid(True, which=”minor”) plt.show()