Package: fieldopt
Title: Area-Frame and Dual-Frame Survey Design under Real Field Cost
Version: 0.1.0.9001
Authors@R: c(
    person("André", "Leite", , "leite@castlab.org", role = c("aut", "cre"),
           comment = c(ORCID = "0000-0002-4718-9766")),
    person("Raydonal", "Ospina", , "raydonal@castlab.org", role = "aut",
           comment = c(ORCID = "0000-0002-9884-9090")),
    person("Cristiano", "Ferraz", , "cferraz@castlab.org", role = "aut",
           comment = c(ORCID = "0000-0002-6838-6734")),
    person("The authors of the dependency Rust crates", role = "ctb",
           comment = "see inst/AUTHORS file for details")
  )
Description: Design of agricultural and other area-frame and dual-frame
        (area plus list) sample surveys that go to the field, with the
        real cost of field work (travel between sampling units plus
        interviews) next to the variance of the design-based estimator.
        Travel matrices from coordinates or a road network; GRASP
        routing of the field work for one or several teams; stratified
        spatially balanced (local pivotal) or spatially ordered
        systematic selection of segments with interpenetrating
        replicates; points inside segments with multiplicity
        (expected-hits) estimation; closed, open and weighted segment
        estimators; Horvitz-Thompson estimation with local-mean or
        replicate variances; cost-aware allocation across strata,
        Hartley's dual-frame allocation with an overlap, and two-stage
        allocation with a cost function; and the cost-variance frontier
        of a design by simulation. The computational engine is the Rust
        crate 'fieldopt-core'. The methods follow Grafström, Lundström
        and Schelin (2012) <doi:10.1111/j.1541-0420.2011.01699.x> for
        the local pivotal method, Grafström and Schelin (2014)
        <doi:10.1111/sjos.12016> for the local-mean variance, Hartley
        (1962) for the dual-frame design, and Beardwood, Halton and
        Hammersley (1959) <doi:10.1017/S0305004100034095> for the
        square-root law of travel behind the cost curve.
License: GPL (>= 3)
URL: https://castlaboratory.github.io/fieldopt/,
        https://github.com/castlaboratory/fieldopt
BugReports: https://github.com/castlaboratory/fieldopt/issues
Depends: R (>= 4.2)
Imports: cli, generics, ggplot2, rlang, stats, tibble
Suggests: arrow, BalancedSampling, dplyr, highs, knitr, osrm, purrr,
        Matrix, rmarkdown, sf, survey, testthat (>= 3.0.0), tidyr, vrpr
VignetteBuilder: knitr
Config/Needs/website: rmarkdown
Config/rextendr/version: 0.5.0
Config/testthat/edition: 3
Encoding: UTF-8
Language: en-GB
Roxygen: list(markdown = TRUE)
RoxygenNote: 8.0.0
SystemRequirements: Cargo (Rust's package manager), rustc >= 1.70.0, xz
Config/pak/sysreqs: xz-utils libclang-dev
Repository: https://castlaboratory.r-universe.dev
Date/Publication: 2026-10-22 20:14:24 UTC
RemoteUrl: https://github.com/castlaboratory/fieldopt
RemoteRef: HEAD
RemoteSha: 115376dac3d6d0f2ddbcc65deac40444925eff5c
NeedsCompilation: yes
Packaged: 2026-10-22 22:41:04 UTC; root
Author: André Leite [aut, cre] (ORCID: <https://orcid.org/0000-0002-4718-9766>),
  Raydonal Ospina [aut] (ORCID: <https://orcid.org/0000-0002-9884-9090>),
  Cristiano Ferraz [aut] (ORCID: <https://orcid.org/0000-0002-6838-6734>),
  The authors of the dependency Rust crates [ctb] (see inst/AUTHORS file
    for details)
Maintainer: André Leite <leite@castlab.org>