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schumaker  

Schumaker Shape-Preserving Spline
View on CRAN: Click here


Download and install schumaker package within the R console
Install from CRAN:
install.packages("schumaker")

Install from Github:
library("remotes")
install_github("cran/schumaker")

Install by package version:
library("remotes")
install_version("schumaker", "1.2.1")



Attach the package and use:
library("schumaker")
Maintained by
Stuart Baumann
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2015-08-08
Latest Update: 2021-09-09
Description:
This is a shape preserving spline which is guaranteed to be monotonic and concave or convex if the data is monotonic and concave or convex. It does not use any optimisation and is therefore quick and smoothly converges to a fixed point in economic dynamics problems including value function iteration. It also automatically gives the first two derivatives of the spline and options for determining behaviour when evaluated outside the interpolation domain.
How to cite:
Stuart Baumann (2015). schumaker: Schumaker Shape-Preserving Spline. R package version 1.2.1, https://cran.r-project.org/web/packages/schumaker. Accessed 04 Jun. 2026.
Previous versions and publish date:
0.1 (2015-08-08 11:05), 0.2 (2016-02-27 09:53), 0.3 (2016-02-29 18:39), 1.0 (2017-05-21 01:10), 1.1 (2018-06-23 19:08), 1.2.1 (2021-09-10 00:00), 1.2 (2019-11-13 10:10)
Other packages that cited schumaker R package
View schumaker citation profile
Other R packages that schumaker depends, imports, suggests or enhances
Complete documentation for schumaker
Functions, R codes and Examples using the schumaker R package
Some associated functions: Schumaker . SchumakerIndInterval . make_approx_functions_from_dataframe . ppmak . ppmak2Deriv . ppmakDeriv . 
Some associated R codes: Create_grouped_functions.R . Schumaker.R . SchumakerIndInterval.R . ppmak.R . ppmak2Deriv.R . ppmakDeriv.R .  Full schumaker package functions and examples
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