splines2_basis function

Create B-Spline basis

This function creates a B-Spline matrix.

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.

Returns

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])