How do I do multi animated lines in one axes?

I need to do two multi animated lines in one axes.Is there any solution to this problem?

As picture shows： This picture use "plot" ,but It's slowly when close to the end. And the matlab give a suggestion :use animatline to instead the plot function.

[Geoff Hayes]

ren - please post some of your code so that we can get an idea of how you are using plot to update the above.