.. only:: html
.. note::
:class: sphx-glr-download-link-note
Click :ref:`here ` to download the full example code
.. rst-class:: sphx-glr-example-title
.. _sphx_glr_gallery_event_handling_coords_demo.py:
===========
Coords demo
===========
An example of how to interact with the plotting canvas by connecting to move
and click events.
.. image:: /gallery/event_handling/images/sphx_glr_coords_demo_001.png
:alt: coords demo
:class: sphx-glr-single-img
.. code-block:: default
from matplotlib.backend_bases import MouseButton
import matplotlib.pyplot as plt
import numpy as np
t = np.arange(0.0, 1.0, 0.01)
s = np.sin(2 * np.pi * t)
fig, ax = plt.subplots()
ax.plot(t, s)
def on_move(event):
# get the x and y pixel coords
x, y = event.x, event.y
if event.inaxes:
ax = event.inaxes # the axes instance
print('data coords %f %f' % (event.xdata, event.ydata))
def on_click(event):
if event.button is MouseButton.LEFT:
print('disconnecting callback')
plt.disconnect(binding_id)
binding_id = plt.connect('motion_notify_event', on_move)
plt.connect('button_press_event', on_click)
plt.show()
.. _sphx_glr_download_gallery_event_handling_coords_demo.py:
.. only :: html
.. container:: sphx-glr-footer
:class: sphx-glr-footer-example
.. container:: sphx-glr-download sphx-glr-download-python
:download:`Download Python source code: coords_demo.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: coords_demo.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_