.. 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_timers.py:
======
Timers
======
Simple example of using general timer objects. This is used to update
the time placed in the title of the figure.
.. image:: /gallery/event_handling/images/sphx_glr_timers_001.png
:alt: timers
:class: sphx-glr-single-img
.. code-block:: default
import matplotlib.pyplot as plt
import numpy as np
from datetime import datetime
def update_title(axes):
axes.set_title(datetime.now())
axes.figure.canvas.draw()
fig, ax = plt.subplots()
x = np.linspace(-3, 3)
ax.plot(x, x ** 2)
# Create a new timer object. Set the interval to 100 milliseconds
# (1000 is default) and tell the timer what function should be called.
timer = fig.canvas.new_timer(interval=100)
timer.add_callback(update_title, ax)
timer.start()
# Or could start the timer on first figure draw
#def start_timer(event):
# timer.start()
# fig.canvas.mpl_disconnect(drawid)
#drawid = fig.canvas.mpl_connect('draw_event', start_timer)
plt.show()
.. _sphx_glr_download_gallery_event_handling_timers.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: timers.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: timers.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_