matplotlib/matplotlib — pull request #3050 by rougier (2014-05-07 16:17:06+00:00)
Title: Animation example: rain drops

This is an example for the animation function displaying rain drops (kind of).

The animation is made using a scatter plot. Each drop is shown as a growing and fading disc.
In the example, there are 50 simultaneous drain drops anytime.
The use of the TkAgg backend is necessary on OSX.