Package: BTWAR
Type: Package
Title: Butterworth-Induced Autoregressive Model
Version: 1.0.1
Authors@R: 
    c(
        person("Carlos", "Bras-Geraldes",
               email = "cgeraldes@gmail.com",
               role  = c("aut", "cre", "cph")),
        person("J. Leonel", "Rocha",
               role  = c("aut", "cph"))
    )
Description: Implements the Butterworth-Induced Autoregressive ('BTWAR')
    model, where autoregressive coefficients are obtained from analog
    Butterworth filter prototypes mapped into the discrete-time domain
    using the Matched Z-Transform. The framework establishes a structured
    connection between frequency-domain filter design and time-domain
    autoregressive modeling. Model order selection is performed via
    nested rolling-origin cross-validation. Method described in
    Bras-Geraldes, Rocha and Martins (2026) <doi:10.3390/math14030479>.
Depends: R (>= 3.5.0)
License: GPL-3
Encoding: UTF-8
Language: en-US
NeedsCompilation: no
Imports: ggplot2, pracma, tseries, scales
Suggests: knitr, rmarkdown, spelling
VignetteBuilder: knitr
URL: https://doi.org/10.3390/math14030479,
        https://github.com/cgeraldes/BTWAR
BugReports: https://github.com/cgeraldes/BTWAR/issues
RoxygenNote: 7.3.3
Packaged: 2026-03-15 19:33:25 UTC; carlosgeraldes
Author: Carlos Bras-Geraldes [aut, cre, cph],
  J. Leonel Rocha [aut, cph]
Maintainer: Carlos Bras-Geraldes <cgeraldes@gmail.com>
Repository: CRAN
Date/Publication: 2026-03-19 14:40:12 UTC
Built: R 4.6.0; ; 2026-04-26 06:15:29 UTC; unix
