lspline: Linear Splines with Convenient Parameterizations

Linear splines with convenient parameterizations such that:

• coefficients are slopes of consecutive segments
• coefficients capture slope change at consecutive knots

Knot locations can be specified

• manually (lspline())
• at breaks dividing the range of x into q equal-frequency
  intervals (qlspline())
• at breaks dividing the range of x into n equal-width intervals
  (elspline())

Inspired by Stata command mkspline and function lspline() from
package ares (Junger and Ponce de Leon 2011). As such, the
implementation follows Greene (2003), chapter 7.5.2.

Installation

From CRAN or development version using remotes:

remotes::install_github("mbojan/lspline", build_vignettes = TRUE)

Examples

See package homepage and the
vignette.

References