Function field

field(
    p: (...x: number[]) => number,
    q: (...x: number[]) => number,
    r?: (...x: number[]) => number,
    s?: (...x: number[]) => number,
): ChalkboardFunction
Defines a vector field.
Parameters
- p: (...x: number[]) => number
  The x-component (defined for 2D, 3D, and 4D vector fields)
- q: (...x: number[]) => number
  The y-component (defined for 2D, 3D, and 4D vector fields)
- Optionalr: (...x: number[]) => number
  The z-component (defined for 3D and 4D vector fields)
- Optionals: (...x: number[]) => number
  The w-component (defined for 4D vector fields)
Returns ChalkboardFunction
Example
```
// Defines f(x, y) = (x^2, y^2)
const f = Chalkboard.vect.field(
    (x, y) => x ** 2,
    (x, y) => y ** 2
);
```
- Defined in Chalkboard.vect.ts:361