Create B-Spline basis

This function creates a B-Spline matrix.

Usage

splines2_basis(x, knots, deg, periodic = FALSE, intercept = TRUE)

Arguments

x

Vector of values.

knots

Vector of knots.

deg

Degree of the Spline functions.

periodic

Whether the basis should be periodic or not.

intercept

Whether the firs column should be kept.

Value

Returns a matrix of B-Spline basis functions.

Examples

n <- 9
deg <- 3
mu <- 0.35
x <- 0:1000 / 1000

knots <- make_knots(n, mu = mu, deg = deg)

B <- splines2_basis(x, knots, deg)
ts.plot(B, col = 1:dim(B)[2])


# Periodic Case
B <- splines2_basis(x, knots, deg, periodic = TRUE)
ts.plot(B, col = 1:dim(B)[2])