matplotlib/examples/anim.py at transforms · staticor/matplotlib · GitHub

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#!/usr/bin/env python

"""

A simple example of an animated plot in matplotlib. You can test the

speed of animation of various backends by running the script with the

'-dSomeBackend' flag

SC Aug 31 2005 mpl 0.83.2:

Here are some numbers from my system, where FPS is the frames rendered

per second

GTK 29 FPS

GTKAgg 18 FPS

GTKCairo 15 FPS

TkAgg 13 FPS

QkAgg 13 FPS

"""

import time

import pylab as p

# turn interactive mode on for dynamic updates. If you aren't in

# interactive mode, you'll need to use a GUI event handler/timer.

p.ion()

tstart = time.time() # for profiling

x = p.arange(0, 2*p.pi, 0.01) # x-array

line, = p.plot(x, p.sin(x))

for i in p.arange(1,200):

line.set_ydata(p.sin(x+i/10.0)) # update the data

p.draw() # redraw the canvas

print 'FPS:' , 200/(time.time()-tstart)