Package: trialSizing
Type: Package
Title: Tools for Experimental Design Sizing
Version: 0.1.0
Authors@R: c(
    person(
      "Willyan", "Bandeira",
      email = "bandeira.wjab@gmail.com",
      role = c("aut", "cre"),
      comment = c(ORCID = "0000-0002-9430-3664")
    ),
    person(
      "Leonardo", "Pradebon",
      email = "leonardopradebon@gmail.com",
      role = "aut",
      comment = c(ORCID = "0000-0001-7827-6312")
    ),
    person(
      "Ivan", "Carvalho",
      email = "carvalho.irc@gmail.com",
      role = "aut",
      comment = c(ORCID = "0000-0001-7947-4900")
    ),
    person(
      "Murilo", "Loro",
      email = "muriloloro@gmail.com",
      role = "aut",
      comment = c(ORCID = "0000-0003-0241-4226")
    )
  )
Description: Sizes field experiments from uniformity-trial data, following
    the relationship between the coefficient of variation and plot size.
    Checks a trial for the spatial structure the sizing methods assume
    (semivariogram, Moran's I, kriged field map), summarises the
    coefficient of variation over every plot shape the grid admits, and
    estimates the optimal plot size by the modified maximum curvature
    method of Meier and Lessman (1971), by the linear response plateau
    (LRP) and quadratic response plateau (QRP) models, and by the closed
    form of Paranaiba, Ferreira and Morais (2009), which can be compared
    side by side. From the coefficient of variation at the optimum it
    derives the number of replications needed to detect a given
    difference between treatment means, as in Cargnelutti Filho and
    others (2014). Every method returns standardised diagnostic
    statistics, optional bootstrap uncertainty for the breakpoint, and
    publication-style plots.
License: GPL (>= 3)
URL: https://willyanjnr.github.io/trialSizing/,
        https://github.com/willyanjnr/trialSizing
BugReports: https://github.com/willyanjnr/trialSizing/issues
Encoding: UTF-8
Language: en
LazyData: true
Depends: R (>= 3.5)
Imports: ggplot2, stats, utils
Suggests: knitr, rmarkdown, patchwork, testthat (>= 3.0.0)
VignetteBuilder: knitr
Config/roxygen2/version: 8.0.0
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-07-27 18:04:14 UTC; Bandeira
Author: Willyan Bandeira [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-9430-3664>),
  Leonardo Pradebon [aut] (ORCID:
    <https://orcid.org/0000-0001-7827-6312>),
  Ivan Carvalho [aut] (ORCID: <https://orcid.org/0000-0001-7947-4900>),
  Murilo Loro [aut] (ORCID: <https://orcid.org/0000-0003-0241-4226>)
Maintainer: Willyan Bandeira <bandeira.wjab@gmail.com>
Repository: CRAN
Date/Publication: 2026-08-05 09:30:02 UTC
Built: R 4.5.3; ; 2026-08-26 00:43:36 UTC; windows
