:orphan:

figanim
-------


Compare figure output performance of Matplotlib vs. GR


.. code-block:: python
    
    
    
    from __future__ import print_function
    
    import sys
    import os
    from timeit import default_timer as timer
    import numpy as np
    
    if len(sys.argv) > 1:
        dev = sys.argv[1]
    else:
        dev = 'ps'
    
    x = np.arange(0, 2 * np.pi, 0.01)
    
    # create an animation using GR
    
    from gr.pygr import plot
    
    tstart = timer()
    os.environ["GKS_WSTYPE"] = dev
    for i in range(1, 100):
        plot(x, np.sin(x + i / 10.0))
        if i % 2 == 0:
            print('.', end="")
            sys.stdout.flush()
    
    fps_gr = int(100 / (timer() - tstart))
    print('fps  (GR): %4d' % fps_gr)
    
    # create the same animation using matplotlib
    
    import matplotlib
    matplotlib.use(dev)
    
    import matplotlib.pyplot as plt
    
    tstart = timer()
    for i in range(1, 100):
        plt.clf()
        plt.plot(np.sin(x + i / 10.0))
        plt.savefig('mpl%04d.%s' % (i, dev))
        if i % 2 == 0:
            print('.', end="")
            sys.stdout.flush()
    
    
    fps_mpl = int(100 / (timer() - tstart))
    print('fps (mpl): %4d' % fps_mpl)
    
    print('  speedup: %6.1f' % (float(fps_gr) / fps_mpl))