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segmented

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Regression Models with Break-Points / Change-Points Estimation (with Possibly Random Effects)

View on CRAN: Click here

Download and install segmented package within the R console
Install from CRAN:

 install.packages("segmented")

Install from Github:

 library("remotes")

                        install_github("cran/segmented")

Install by package version:

 library("remotes")

                        install_version("segmented", "2.2-0")

Attach the package and use:

 library("segmented")

Maintained by
Vito M. R. Muggeo
[Scholar Profile | Author Map]

All associated links for this package

First Published: 2003-10-07

Latest Update: 2025-02-28

Description:

Fitting regression models where, in addition to possible linear terms, one or more covariates have segmented (i.e., broken-line or piece-wise linear) or stepmented (i.e. piece-wise constant) effects. Multiple breakpoints for the same variable are allowed. The estimation method is discussed in Muggeo (2003, ) and illustrated in Muggeo (2008, ). An approach for hypothesis testing is presented in Muggeo (2016, ), and interval estimation for the breakpoint is discussed in Muggeo (2017, ). Segmented mixed models, i.e. random effects in the change point, are discussed in Muggeo (2014, ). Estimation of piecewise-constant relationships and changepoints (mean-shift models) is discussed in Fasola et al. (2018, ).

How to cite:

Vito M. R. Muggeo (2003). segmented: Regression Models with Break-Points / Change-Points Estimation (with Possibly Random Effects). R package version 2.2-0, https://cran.r-project.org/web/packages/segmented. Accessed 04 Aug. 2026.

Previous versions and publish date:

(2026-07-09 07:02), 0.1-1 (2003-10-07 19:23), 0.1-2 (2003-12-16 16:44), 0.1-3 (2004-01-22 15:04), 0.1-4 (2004-02-17 18:24), 0.2-0 (2007-07-20 16:17), 0.2-1 (2007-10-08 21:58), 0.2-2 (2007-10-17 17:39), 0.2-3 (2008-01-07 21:04), 0.2-4 (2008-01-21 20:41), 0.2-5 (2009-10-26 21:27), 0.2-6 (2009-11-06 18:11), 0.2-7.1 (2010-04-28 18:49), 0.2-7.2 (2010-09-28 18:33), 0.2-7.3 (2010-12-03 09:33), 0.2-7 (2010-04-14 12:36), 0.2-8.1 (2011-06-20 19:59), 0.2-8.2 (2011-07-05 13:39), 0.2-8.3 (2012-01-16 18:11), 0.2-8.4 (2012-01-31 18:01), 0.2-8 (2011-05-25 20:10), 0.2-9.0 (2012-04-20 17:34), 0.2-9.1 (2012-05-10 06:14), 0.2-9.2 (2012-07-12 15:15), 0.2-9.3 (2012-09-22 16:11), 0.2-9.4 (2013-01-22 14:32), 0.2-9.5 (2013-10-04 13:24), 0.3-0.0 (2013-11-18 16:40), 0.3-1.0 (2014-04-18 09:47), 0.4-0.0 (2014-07-11 16:46), 0.5-0.0 (2014-09-10 17:15), 0.5-1.0 (2014-12-12 14:48), 0.5-1.1 (2015-02-18 13:58), 0.5-1.2 (2015-09-08 15:38), 0.5-1.4 (2015-11-04 17:33), 0.5-2.0 (2017-05-25 02:29), 0.5-2.1 (2017-06-15 00:42), 0.5-2.2 (2017-09-19 02:28), 0.5-3.0 (2017-11-30 14:01), 0.5-4.0 (2019-05-13 13:30), 1.0-0 (2019-06-17 20:30), 1.1-0 (2019-12-10 20:20), 1.2-0 (2020-06-23 16:10), 1.3-0 (2020-10-27 12:20), 1.3-1 (2020-12-10 17:40), 1.3-2 (2021-02-09 20:30), 1.3-3 (2021-03-08 17:42), 1.3-4 (2021-04-22 16:00), 1.4-0 (2022-01-28 10:50), 1.4-1 (2022-03-24 16:40), 1.5-0 (2022-04-12 01:10), 1.6-0 (2022-05-31 18:10), 1.6-1 (2022-11-08 16:10), 1.6-2 (2022-12-09 19:50), 1.6-3 (2023-03-27 01:50), 1.6-4 (2023-04-13 17:40), 2.0-0 (2023-11-27 20:20), 2.0-1 (2023-12-19 11:20), 2.0-2 (2024-01-23 10:20), 2.0-3 (2024-02-16 12:50), 2.0-4 (2024-04-19 13:32), 2.1-0 (2024-05-14 13:10), 2.1-1 (2024-07-26 16:30), 2.1-2 (2024-09-05 22:10), 2.1-3 (2024-10-25 14:10), 2.1-4 (2025-02-28 13:50), 2.2-0 (2026-01-15 14:30)

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Other R packages that segmented depends, imports, suggests or enhances

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Complete documentation for segmented

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Functions, R codes and Examples using the segmented R package

Some associated functions: aapc . broken.line . confint.segmented.lme . confint.segmented . confint.stepmented . davies.test . down . draw.history . fitted.segmented.lme . intercept . lines.segmented . lines.stepmented . model.matrix.segmented . model.matrix.stepmented . plant . plot.segmented.lme . plot.segmented . plot.stepmented . points.segmented . predict.segmented . print.segmented.lme . print.segmented . pwr.seg . seg.control . seg.lm.fit . seg . segmented-package . segmented.lme . segmented . segreg . selgmented . slope . stagnant . step.lm.fit . stepmented . summary.segmented.lme . summary.segmented . summary.stepmented . vcov.segmented.lme . vcov.segmented . vcov.stepmented .
Some associated R codes: confint.segmented.R . confint.stepmented.R . draw.history.R . fitted.segmented.lme.R . lines.segmented.R . lines.stepmented.R . plot.segmented.R . print.segmented.R . print.summary.segmented.R . print.summary.stepmented.R . pscore.test.R . seg.control.R . segmented.R . segmented.glm.R . segmented.lm.R . segmented.numeric.R . selgmented.R . slope.R . stepmented.R . stepmented.glm.R . stepmented.lm.R . stepmented.ts.R . summary.segmented.R . summary.stepmented.R . vcov.segmented.R . vcov.segmented.lme.R . vcov.stepmented.R . Full segmented package functions and examples

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