Line plot with arrows in matplotlib

Question

I have a line graph that I want to plot using arrows instead of lines. That is, the line between successive pairs of points should be an arrow going from the first point to

Answer 1

You could superpose a quiver plot on your line plot.

Answer 2

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()