How can I calculate stream function from the ocean currents(u&v)

[ramesh <kv_ramesh@xxxxxxxxxxxxxx>]

 Dear ferret users,

     I am new to ferret, just a beginner. Currently I wants to calculate the
stream function from the ocean velocities (u and v) .

I  will  be  thank full to you, If  any body can help me to solve this
problem
in ferret.

regards,
Ramesh