OuterProdSecondDerivative {orthogonalsplinebasis} | R Documentation |
Provides the functional outer product of second derivatives of a set of basis functions in a SplineBasis
object.
It a convenient form for forming a penalty on curve smoothness when fitting a spline curve.
OuterProdSecondDerivative(basis)
basis |
A |
A square matrix of order nrow(basis)
.