The following types can be passed to interpolator constructors to modify how points are handled at/outside the boundaries of the interpolation nodes. See the "Boundaries" section of the tutorial for examples.


Allows small overshoots at boundaries, but not large ones. Errors are only triggered when the interpolation coordinate is outside of a boundary and not close to it. At the lower boundary, for example, an error would be triggered when (x < boundary) & !(x ≈ boundary).