Determine whether a point lies in a Matplotlib subplot

Question

I've got a Matplotlib fig with several subplots. I want a function to be executed when the subplot in position 1 is clicked. From the event object that is generated by the event handler how do I determine whether or not the subplot was clicked?

Answer 1

The event object that comes into the callback as an attribute inaxes which is the axes which was clicked.

import matplotlib.pyplot as plt
fig, ax_list = plt.subplots(2, 2)
ax_list = ax_list.ravel()
ax_list[0].set_gid('A')
ax_list[1].set_gid('B')
ax_list[2].set_gid('C')

def clicker(event):
    print(event.inaxes.get_gid())

fig.canvas.mpl_connect('button_press_event', clicker)
plt.show()