.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "gallery/event_handling/timers.py" .. LINE NUMBERS ARE GIVEN BELOW. .. 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. .. GENERATED FROM PYTHON SOURCE LINES 9-36 .. 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 `_