python-matplotlibHow to add second Y axis
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
twin = ax.twinx()
p1, = ax.plot([0, 1, 2], "g-")
p2, = twin.plot([1, 7, 5], "r-")
ax.set_xlim(0, 2)
ax.set_ylim(0, 3)
twin.set_ylim(0, 8)
ax.tick_params(axis='y', colors=p1.get_color())
twin.tick_params(axis='y', colors=p2.get_color())
plt.show()ctrl + cimport matplotlib.pyplot as pltloads Matplotlib module to use plotting capabilities | .subplots(creates set of charts on a single chart area |
twinx()creates twin axes sharing | ax.plot(plot first line (green one) |
twin.plot(plot second line (red one) | .set_xlim(set |
.set_ylim(set | .show()render chart in a separate window |
Usage example
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
twin = ax.twinx()
p1, = ax.plot([0, 1, 2], "g-")
p2, = twin.plot([1, 7, 5], "r-")
ax.set_xlim(0, 2)
ax.set_ylim(0, 3)
twin.set_ylim(0, 8)
ax.tick_params(axis='y', colors=p1.get_color())
twin.tick_params(axis='y', colors=p2.get_color())
plt.show()