Line plot with arrows in matplotlib

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You can do this with quiver, but it’s a little tricky to get the keyword arguments right.

import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(0, 2*np.pi, 10)
y = np.sin(x)

plt.figure()
plt.quiver(x[:-1], y[:-1], x[1:]-x[:-1], y[1:]-y[:-1], scale_units="xy", angles="xy", scale=1)

plt.show()

enter image description here

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