Hi all,

I am plotting a dot plot of x vs y like the example below:
Code:
import numpy as np
import matplotlib.pyplot as plt

a = np.random.random(750)
b = np.random.random(750)

fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(a, b, 'ro')
plt.show()
I have 750 points - and would like to be able to get information about the origin of the point...