.. _old_animation-dynamic_image_gtkagg:

old_animation example code: dynamic_image_gtkagg.py
===================================================

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

::

    #!/usr/bin/env python
    
    from __future__ import print_function
    """
    An animated image
    """
    import time
    
    import gobject
    import gtk
    
    import matplotlib
    matplotlib.use('GTKAgg')
    
    from pylab import *
    
    fig = figure(1)
    a = subplot(111)
    x = arange(120.0)*2*pi/120.0
    x = resize(x, (100,120))
    y = arange(100.0)*2*pi/100.0
    y = resize(y, (120,100))
    y = transpose(y)
    z = sin(x) + cos(y)
    im = a.imshow( z, cmap=cm.jet)#, interpolation='nearest')
    
    manager = get_current_fig_manager()
    cnt = 0
    tstart = time.time()
    def updatefig(*args):
        global x, y, cnt, start
        x += pi/15
        y += pi/20
        z = sin(x) + cos(y)
        im.set_array(z)
        manager.canvas.draw()
        cnt += 1
        if cnt==50:
            print('FPS', cnt/(time.time() - tstart))
            return False
        return True
    
    cnt = 0
    
    gobject.idle_add(updatefig)
    show()
    

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