jnt: Johnson-Neyman Technique

##' Johnson-Neyman Technique
##'
##' Carry out the Johnson-Neyman Technique
##'
##' \tabular{ll}{
##' Package: \tab jnt\cr
##' Type: \tab Package\cr
##' Version: \tab 0.4\cr
##' Date: \tab 2016-09-14\cr
##' License: \tab GPL-2\cr
##' LazyLoad: \tab yes\cr
##' LazyData: \tab yes\cr
##' }
##'
##' @name jnt-package
##'
##' @docType package
##'
##' @author Kevin Middleton (middletonk@@missouri.edu)
##'
##' Maintainer: Kevin Middleton (middletonk@@missouri.edu)
##'
##' @references Johnson PO, Neyman J (1936) Tests of certain linear
##'   hypotheses and their application to some educational problems.
##'   \emph{Statistical Research Memoirs} 1:57-93.
##'
##'   Hunka S, Leighton J (1997) Defining Johnson-Neyman regions of
##'   significance in three-covariate ANCOVA using Mathematica.
##'   \emph{Journal of Educational and Behavioral Statistics} 22:
##'   361-387.
##'
##'   White CR (2003) Allometric analysis beyond heterogenous
##'   regression slopes: Use of the Johnson-Neyman Technique in
##'   comparative biology. \emph{Physiol Biochem Zool} 76: 135-140.
##'
##' \emph{Examples:}
##'
##' White CR (2003) The influence of foraging mode and arid adaptation
##' on the basal metabolic rates of burrowing mammals. \emph{Physiol
##' Biochem Zool} 76: 122-134.
##'
##' Lavin SR, Karasov WH, Ives AR, Middleton KM, Garland T, Jr (2008)
##' Morphometrics of the avian small intestine compared with that of
##' nonflying mammals: A phylogenetic approach. \emph{Physiol Biochem
##' Zool} 81: 526-550.
##'
##' @keywords package
##'
##' @importFrom graphics abline plot points
##' @importFrom stats coef lm qf sd residuals
##' @import smatr
##' @import ggplot2
##'
##' @examples
##'
##' example(jnt)
##'
NULL





##' Data from Lavin et al., 2008
##'
##' Data set 1 from Lavin et al., 2008
##'
##'
##' @name Lavin.1
##'
##' @aliases Lavin.1 Lavin.2
##'
##' @docType data
##'
##' @format A data frame with 64 observations on the following 2
##'   variables.
##'   \describe{
##'   \item{\code{V1}}{a numeric vector}
##'   \item{\code{V2}}{a numeric vector}
##' }
##'
##' @references Lavin SR, Karasov WH, Ives AR, Middleton KM, Garland
##'   T, Jr (2008) Morphometrics of the avian small intestine compared
##'   with that of nonflying mammals: A phylogenetic approach.
##'   \emph{Physiol Biochem Zool} 81: 526-550.
##'
##' @keywords datasets
##'
##' @examples
##'
##' str(Lavin.1)
##' str(Lavin.2)
##'
##' (Lavin <- jnt(Lavin.1, Lavin.2))
##' plot(Lavin)
##'
NULL





##' Data from White, 2003
##'
##' Data set 1 from from White, 2003
##'
##'
##' @name White.1
##'
##' @aliases White.1 White.2
##'
##' @docType data
##'
##' @format A data frame with 50 observations on the following 2
##'   variables.
##'   \describe{
##'   \item{\code{V1}}{a numeric vector}
##'   \item{\code{V2}}{a numeric vector}
##' }
##'
##' @references White CR (2003) Allometric analysis beyond
##'   heterogenous regression slopes: Use of the Johnson-Neyman
##'   Technique in comparative biology. \emph{Physiol Biochem Zool}
##'   76: 135-140.
##'
##' @keywords datasets
##'
##' @examples
##'
##' str(White.1)
##' str(White.2)
##'
##' (White <- jnt(White.1, White.2))
##' plot(White)
##'
NULL