Package: ppweibull
Type: Package
Title: Piecewise Lifetime Models
Version: 1.0
Date: 2026-02-02
Authors@R: c(person("Diego", "Gallardo", role = c("aut","cre"), email = "dgallardo@ubiobio.cl"),
	person("Yolanda","Gomez", role=c("aut"), email="ygomez@ubiobio.cl"),
	person("Hector","Gomez", role=c("aut"), email="hgomez@uantof.cl"),
	person("Barry","Arnold", role=c("aut"), email="barnold@ucr.edu"))
Maintainer: Diego Gallardo <dgallardo@ubiobio.cl>
Description: Provides functions for estimation and data generation for several piecewise lifetime  distributions. The package implements the power piecewise Weibull model, which includes the piecewise Rayleigh and piecewise exponential models as special cases. See Feigl and Zelen (1965) <doi:10.2307/2528247> for methodological details.
Depends: R (>= 4.0.0), stats
Imports: survival, pracma, segmented, msm, nloptr
License: GPL (>= 2)
NeedsCompilation: no
Packaged: 2026-02-02 03:12:31 UTC; Diego
Author: Diego Gallardo [aut, cre],
  Yolanda Gomez [aut],
  Hector Gomez [aut],
  Barry Arnold [aut]
Repository: CRAN
Date/Publication: 2026-02-04 18:10:02 UTC
Built: R 4.6.0; ; 2026-04-26 09:32:28 UTC; unix
