splines_df: Construct Data Frame of Basis Functions.

In CovEsts: Nonparametric Estimators for Covariance Functions

Construct Data Frame of Basis Functions.

Description

This helper function constructs a data frame with the following structure:

• One column for the x-values

• m + p columns values of squared basis functions evaluated at the corresponding x.

Usage

splines_df(x, p, m, taus)

Arguments

x	A vector of lags.
p	The order of the splines.
m	The number of nonboundary knots.
taus	Vector of \taus, see get_tau.

Value

A data frame of the above structure.

Examples

taus <- get_taus(3, 2)
splines_df(seq(0, 2, by=0.25), 3, 2, taus)

CovEsts documentation built on Sept. 10, 2025, 10:39 a.m.