D1Bsplines {cubicBsplines}R Documentation

Computation of the 1st derivative of a cubic B-spline basis associated to a given vector of knots

Description

Computation of the 1st derivative of a cubic B-spline basis associated to a given vector of knots

Usage

D1Bsplines(x, knots)

Arguments

x

vector of values where the 1st derivative of the B-spline basis must be evaluated.

knots

vector of knots spanning the desired B-spline basis.

Value

A matrix of dimension length(x) by (length(knots)+2).

Each column corresponds to (the 1st derivative of) one cubic B-spline in the basis.

Examples

D1Bsplines(x=runif(20),knots=seq(0,1,length=11))

[Package cubicBsplines version 1.0.0 Index]