GridBoundaryCondition.Periodic Property

public static GridBoundaryCondition Periodic { get; }

Public Shared ReadOnly Property Periodic As GridBoundaryCondition
	Get

public:
static property GridBoundaryCondition Periodic {
	GridBoundaryCondition get ();
}

static member Periodic : GridBoundaryCondition with get

Property Value

When an interpolation stencil requires a value at index i outside [0, N-1], the index is wrapped using modulo: i' = ((i % N) + N) % N.

Effect: The grid is treated as periodic (wraps around). Index -1 maps to N-1, index N maps to 0, etc.

Use cases: Data that is naturally periodic, such as angular coordinates (longitude, phase angles), periodic signals, or toroidal domains.

Note: For smooth periodic interpolation, ensure that grid values at the boundaries are consistent (e.g., f[0] ≈ f[N-1] for 1D).

Reference