You must be connected to the Internet the first time you view this simulation, at which point the codebase for all the simulations will be downloaded to your computer. This process make take a few minutes, as the codebase is roughly 9MB in size. Subsequent viewings of the applets will run from your local copy.
This applet allows you to see how various analytic
functions look in a "grass seeds" representation,
letting you visualize the functions more clearly. You
can also explore the set of curves which are perpendicular
to your analytic function (these are equipotentials
if the your function corresponds to an electrostatic
field). Enter the x-component of your analytic function
in the left text box, using standard convections (i.e.
"*" for multiplicaton, "/" for division,
"^" for exponents). Enter the y-component
of your analytic function in the right text box. Then
choose either "grass seeds" or "equipotentials"
depending on what you want displayed.