POLYSPLINE: Stata module to generate sensible bases for polynomials and other splines

Roger Newson

Statistical Software Components from Boston College Department of Economics

Abstract: The polyspline package inputs an X-variable and a list of reference points on the X-axis, and generates a basis of reference splines (one per reference point) for a polynomial or other unrestricted spline. This basis can be included in the list of covariates of a regression model. The estimated parameters will then be values of the spline at the reference points, or differences between values of the spline at the reference points and the value of the spline at a base reference point. polyspline is an easy-to-use front end for the SSC package bspline, which must be installed for polyspline to work.

Language: Stata
Requires: Stata version 16 and bspline from SSC (q.v.)
Keywords: splines; polynomial; reference spline; regression (search for similar items in EconPapers)
Date: 2013-12-31, Revised 2024-05-22
Note: This module should be installed from within Stata by typing "ssc install polyspline". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/p/polyspline.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/p/polyspline.sthlp help file (text/plain)

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