# DifferentialSolver enum

Namespace: [Grasshopper2.Types.Fields](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.types.fields.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public enum DifferentialSolver
```

Enumerates the possible differential solvers for approximating trajectories through vector fields.

## Values

| Name | Value | Description |
| --- | --- | --- |
| Euler | 0 | A trajectory is approximated by taking smaller steps and re-evaluating at each. |
| RungeKutta2 | 1 | Second order Runge-Kutta solver. |
| RungeKutta3 | 2 | Third order Runge-Kutta solver. |
| RungeKutta4 | 3 | Fourth order Runge-Kutta solver. |