Package: pgt
Type: Package
Title: Data Envelopment Analysis for Pollution-Generating Technologies
Version: 0.5.0
Authors@R: c(
    person("Erik", "Enstad", email = "erik.enstad@nhh.no",
           role = c("aut", "cre"),
           comment = c(ORCID = "0009-0006-1053-3849")))
Description: Nonparametric efficiency analysis for pollution-generating
    technologies under the materials-balance principle. Implements the
    weak-G-disposability model of Rodseth (2025)
    <doi:10.1007/s11123-025-00768-0> and its factorially determined
    multi-output representation, the by-production intersection
    technology of Murty, Russell and Levkoff (2012)
    <doi:10.1016/j.jeem.2012.02.005>, the materials-balance cost model of
    Coelli, Lauwers and Van Huylenbroeck (2007)
    <doi:10.1007/s11123-007-0052-8> and a weak-disposability reference
    model, with an enforced materials-balance identity, a pre-estimation
    feasibility audit, metafrontier decompositions, bad-output shadow
    prices, marginal abatement cost curves, a cross-axiom comparison
    harness, a global Malmquist-Luenberger productivity index and
    subsampling inference. Estimators are solved with 'lpSolveAPI'.
License: GPL (>= 3)
Encoding: UTF-8
RoxygenNote: 7.3.3
Depends: R (>= 4.0.0)
Imports: stats, graphics, utils, lpSolveAPI
Suggests: testthat (>= 3.0.0), knitr, rmarkdown, frontier
Config/testthat/edition: 3
VignetteBuilder: knitr
LazyData: true
URL: https://github.com/iik1/pgt
BugReports: https://github.com/iik1/pgt/issues
NeedsCompilation: no
Packaged: 2026-07-18 10:22:12 UTC; s14454
Author: Erik Enstad [aut, cre] (ORCID: <https://orcid.org/0009-0006-1053-3849>)
Maintainer: Erik Enstad <erik.enstad@nhh.no>
Repository: CRAN
Date/Publication: 2026-07-28 15:50:02 UTC
