| 
Class Summary | 
| BoundaryGrid | 
An implementation of Grid where a boundary of some kind is supported. | 
| FixedBoundaryGrid | 
An implementation of BoundaryGrid where all the boundary elements are set once at construction time to a
 single, common value and remain fixed thereafter. | 
| Grid | 
A grid in 3D whose elements are alterable doubles. | 
| NoBoundaryGrid | 
An implementation of class Grid where no boundary is allowed. | 
| PeriodicBoundaryGrid | 
An implementation of BoundaryGrid where the boundary elements are periodic images of interior grid elements. | 
| RepeatBoundaryGrid | 
Uses a repeating value boundary condition, which is equivalent to having
 Neumann boundary conditions with the derivative at the boundary being zero. |