Type: Package
Package: gtfs2emis
Title: Estimating Public Transport Emissions from General Transit Feed
        Specification (GTFS) Data
Version: 0.1.2
Authors@R: c(
             person(given = "Joao",
                family = "Bazzo",
                email = "joao.bazzo@gmail.com",
                role = c("aut", "cre"),
                comment = c(ORCID = "0000-0003-4536-5006")),
             person(given = "Rafael H. M.",
                family = "Pereira",
                email = "rafa.pereira.br@gmail.com",
                role=c("aut"),
                comment = c(ORCID = "0000-0003-2125-7465")),
             person(given = "Pedro R.",
                family = "Andrade",
                email = "pedro.andrade@inpe.br",
                role=c("aut"),
                comment = c(ORCID = "0000-0001-8675-4046")),
             person(given = "Sergio", family = "Ibarra-Espinosa",
                role = c("ctb"),
                email = "zergioibarra@gmail.com",
                comment = c(ORCID = "0000-0002-3162-1905")),
            person(given = "Ipea - Institute for Applied Economic Research",
                role = c("cph", "fnd")))
Description: A bottom up model to estimate the emission levels of
        public transport systems based on General Transit Feed
        Specification (GTFS) data. The package requires two main
        inputs: i) Public transport data in the GTFS standard format;
        and ii) Some basic information on fleet characteristics such as
        fleet age, technology, fuel and Euro stage. As it stands, the
        package estimates several pollutants at high spatial and
        temporal resolutions. Pollution levels can be calculated for
        specific transport routes, trips, time of the day or for the
        transport system as a whole. The output with emission estimates
        can be extracted in different formats, supporting analysis on
        how emission levels vary across space, time and by fleet
        characteristics. A full description of the methods used in the
        'gtfs2emis' model is presented in Vieira, J. P. B.; Pereira, R.
        H. M.; Andrade, P. R. (2022) <doi:10.31219/osf.io/8m2cy>.
URL: https://ipeagit.github.io/gtfs2emis/ ,
        https://github.com/ipeaGIT/gtfs2emis
BugReports: https://github.com/ipeaGIT/gtfs2emis/issues
License: MIT + file LICENSE
Depends: R (>= 3.6)
Imports: checkmate, data.table, furrr, future, gtfs2gps (>= 2.1-4),
        methods, sf (>= 0.9-0), sfheaders, terra, units, parallelly
Suggests: gtfstools, ggplot2, knitr, lwgeom, progressr, rmarkdown,
        testthat (>= 2.1.0)
VignetteBuilder: knitr
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
LazyData: true
Config/pak/sysreqs: libabsl-dev cmake libgdal-dev gdal-bin libgeos-dev
        make libuv1-dev libssl-dev libproj-dev libsqlite3-dev
        libudunits2-dev
Repository: https://ipea.r-universe.dev
Date/Publication: 2026-02-12 03:05:33 UTC
RemoteUrl: https://github.com/ipea/gtfs2emis
RemoteRef: HEAD
RemoteSha: 99204aabe2073ffbe193784632f193836a2786c7
NeedsCompilation: no
Packaged: 2026-06-13 06:30:21 UTC; root
Author: Joao Bazzo [aut, cre] (ORCID: <https://orcid.org/0000-0003-4536-5006>),
  Rafael H. M. Pereira [aut] (ORCID:
    <https://orcid.org/0000-0003-2125-7465>),
  Pedro R. Andrade [aut] (ORCID: <https://orcid.org/0000-0001-8675-4046>),
  Sergio Ibarra-Espinosa [ctb] (ORCID:
    <https://orcid.org/0000-0002-3162-1905>),
  Ipea - Institute for Applied Economic Research [cph, fnd]
Maintainer: Joao Bazzo <joao.bazzo@gmail.com>