[pstricks] beats in postscript

[Christophe Jorssen]

> The project is to graph oscillations :
> y (x) = A sin (omega+omega_0)t/2  sin (omega-omega_0)t/2
> which are called beats for small values of omega-omega_0.
> Is there a way of improving the ugly figure I got below
> or is it an intrinsic problem of postscript
> not being able to handle quick changes in direction.

Try

\psplot[linewidth=.3pt,%
linecolor=black,plotpoints=1000]{0}{120} {95 x mul 180 mul 3.1415 div sin .8
x mul 180 mul 3.1415
div sin mul 50 mul

instead.

Kristof