reset()
import scipy as sp
import matplotlib.pyplot as mpl_pp
x = sp.linspace(0, 2*sp.pi, 100)
mpl_pp.plot(x,sin(x))
mpl_pp.plot(x,sin(x),'o')
mpl_pp.xlabel('x'), mpl_pp.ylabel('sin(x)')
mpl_pp.savefig('doublesin.png')