polar plot showing only points (and no lines)
I use the following code to show the force of wind as a function of the direction.

fig = plt.figure()
ax = fig.add_axes([0.0, 0.0, 1., 1.], polar=True)
ax.plot(temp.direction, temp.force, color='blue', lw = 0, style = 'o');

How can I tell chaco to just draw the points and no lines between the points

thanks Mathias
