[R] [R-pkgs] segmented 2.1-0 is released

[Vito Muggeo via R-packages]

dear R users,
I am pleased to announce that segmented 2.1-0 is now available on CRAN.

segmented focuses on estimation of breakpoints/changepoints of 
segmented, i.e. piecewise linear, relationships in (generalized) linear 
models. Starting with version 2.0-0, it is also possible to model 
stepmented, i.e. piecewise constant, effects.

In the last release both models may be fitted via a formula interface, 
such as

segreg(y ~ seg(x1, npsi=2) + seg(x2) + z)

stepreg(y ~ seg(x1, npsi=2) + seg(x2) +seg(x3, npsi=3) + z, family=poisson)

There is virtually no limit in the number of covariates and 
corresponding number of changepoints to be estimated.

thank you,
kind regards,
Vito


-- 
=================================================
Vito M.R. Muggeo, PhD
Professor of Statistics
Dip.to Sc Econom, Az e Statistiche
Università di Palermo
viale delle Scienze, edificio 13
90128 Palermo - ITALY
tel: 091 23895240; fax: 091 485726
http://www.unipa.it/persone/docenti/m/vito.muggeo
Assoc Editor: Statist Modelling, Statist Meth Appl
past chair, Statistical Modelling Society
coordinator, PhD Program in Econ, Businss, Statist

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