.. _old_animation-simple_idle_wx:

old_animation example code: simple_idle_wx.py
=============================================

[`source code <simple_idle_wx.py>`_]

::

    """
    A simple example of an animated plot using a wx backend
    """
    from __future__ import print_function
    import numpy as np
    import matplotlib
    matplotlib.use('WXAgg') # do this before importing pylab
    
    import matplotlib.pyplot as plt
    
    fig, ax = plt.subplots()
    t = np.arange(0, 2*np.pi, 0.1)
    line, = ax.plot(t, np.sin(t))
    dt = 0.05
    
    def update_line(idleevent):
        if update_line.i==200:
            return False
        print('animate', update_line.i)
        line.set_ydata(np.sin(t+update_line.i/10.))
        fig.canvas.draw_idle()                 # redraw the canvas
        update_line.i += 1
    update_line.i = 0
    
    import wx
    wx.EVT_IDLE(wx.GetApp(), update_line)
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)