matplotlib Code

#!/usr/bin/env python2.3

import matplotlib.matlab
import gtk
import Numeric

fig = matplotlib.matlab.figure(1)
ind = Numeric.arange(60)
x_tmp=[]
for i in range(100):
    x_tmp.append(Numeric.sin((ind+i)*Numeric.pi/15.0))

X=Numeric.array(x_tmp)
lines = matplotlib.matlab.plot(X[:,0],'o')

def updatefig(*args):
    updatefig.count += 1
    if updatefig.count>59: updatefig.count=0
    lines[0].set_data(ind,X[:,updatefig.count])
    fig.draw()
    return gtk.TRUE

updatefig.count=-1

gtk.timeout_add(200,updatefig)
matplotlib.matlab.show()