Horizontal axis in terms of pi
Hello all..
When creating a 2D plot, is there a way to have the plot show the horizontal axis ticks in terms of pi rather than real numbers?

Here's a simple plot of f(x) = 2sin(4x)
The horizontal axis shows -10, -5, 0, 5, 10
I would like to add more ticks to this, but more importantly I would like them to be in tems of pi.
I looked through some of the previous posts, and MC 15 help, but I haven't found anything pertinent.
Any ideas?
Thanks

