D1Bsplines {cubicBsplines} | R Documentation |
Computation of the 1st derivative of a cubic B-spline basis associated to a given vector of knots
D1Bsplines(x, knots)
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. |
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.
D1Bsplines(x=runif(20),knots=seq(0,1,length=11))