- splineSpline!(T, N, X) spline(Repeat!(N, Slice!(RCI!(immutable X))) grid, Slice!(yIterator, N, ykind) values, SplineBoundaryType typeOfBoundaries, T valueOfBoundaryConditions) 
- splineSpline!(T, N, X) spline(Repeat!(N, Slice!(RCI!(immutable X))) grid, Slice!(yIterator, N, ykind) values, SplineBoundaryCondition!T boundaries, SplineType kind, T param) 
- splineSpline!(T, N, X) spline(Repeat!(N, Slice!(RCI!(immutable X))) grid, Slice!(yIterator, N, ykind) values, SplineBoundaryCondition!T lBoundary, SplineBoundaryCondition!T rBoundary, SplineType kind, T param) 
- splineSpline!(T, N, X) spline(Repeat!(N, Slice!(RCI!(immutable X))) grid, Slice!(yIterator, N, ykind) values, SplineConfiguration!T configuration) 
Constructs multivariate cubic spline in symmetrical form with nodes on rectilinear grid. Result has continues second derivatives throughout the curve / nd-surface.