This set of function change from polar or cartesian coordinates into degrees with north reference. It also change degrees north into cartesian or polar coordinates. This is useful when working with velocity vector, e.g. current, wind.
The functions work with single values or with vectors.

The zip file contain:

- compass2pol.m: change degree north into polar coordinates.
- compass2cart.m: change degree north and velocity into u and v (cartesian coordinates).
- cart2compass.m: change u and v (cartesian coordinates) into degree north and velocity.
- pol2compass.m: change polar coordinates into degree north.