refinement_mask

B1.refinement_mask()

This function is needed for local refinement (see [Badoual2016]). Basis splines with the ‘local refinement property’ can be expressed as a linear combination of themselfs. This is useful when you iteratively want to refine your spline with additional knots in a given interval. This creates a non-uniform spline, which is not supported by splinebox. We keep it here incase we ever decide to support non-uniform splines in the future.