#!/usr/bin/env python
from pylab import *
def f(t):
'a damped exponential'
s1 = cos(2*pi*t)
e1 = exp(-t)
return multiply(s1,e1)
t1 = arange(0.0, 5.0, .2)
l = plot(t1, f(t1), 'ro')
setp(l, 'markersize', 30)
setp(l, 'markerfacecolor', 'b')
#savefig('arctest', dpi=150)
show()