mouse_position.py

"""
Image with Mouse Position
=========================
This example shows how mpld3 can display images using plt.imshow().
It also includes the mouse position plugin, so that the mouse coordinates
are displayed in the lower-right corner.
"""
import matplotlib.pyplot as plt
import numpy as np

import mpld3
from mpld3 import plugins

fig, ax = plt.subplots()

x = np.linspace(-2, 2, 20)
y = x[:, None]
X = np.zeros((20, 20, 4))

X[:, :, 0] = np.exp(- (x - 1) ** 2 - (y) ** 2)
X[:, :, 1] = np.exp(- (x + 0.71) ** 2 - (y - 0.71) ** 2)
X[:, :, 2] = np.exp(- (x + 0.71) ** 2 - (y + 0.71) ** 2)
X[:, :, 3] = np.exp(-0.25 * (x ** 2 + y ** 2))

im = ax.imshow(X, extent=(10, 20, 10, 20),
               origin='lower', zorder=1, interpolation='nearest')
fig.colorbar(im, ax=ax)

ax.set_title('An Image', size=20)

plugins.connect(fig, plugins.MousePosition(fontsize=14))

mpld3.show()