[Matplotlib-users] plot color as a function of values?

[Xavier G. <xav...@gm...>]

Hi,

Imagine you have something like:

from pylab import *
t = arange(0.0, 2.0, 0.01)
s = sin(2*pi*t)
ax = subplot(111)
ax.plot(t, s)

That's fine but now I would like to plot the negative parts of the curve 
in red and the positive one in green.
Is there a nice pylab oriented way to do that? Some kind of "conditional 
formating"?

Xavier