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Jan 4, 2023
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Included Friendly and Monette #4803

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Included Friendly and Monette
benyamindsmith Apr 19, 2022
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Update R/stat-ellipse.R
benyamindsmith Aug 26, 2022
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5 changes: 4 additions & 1 deletion R/stat-ellipse.R
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#' Compute normal data ellipses
#'
#' The method for calculating the ellipses has been modified from
#' `car::dataEllipse` (Fox and Weisberg, 2011)
#' `car::dataEllipse` (Fox and Weisberg 2011, Friendly and Monette 2013)
#'
#' @references John Fox and Sanford Weisberg (2011). An \R Companion to
#' Applied Regression, Second Edition. Thousand Oaks CA: Sage. URL:
#' \url{https://socialsciences.mcmaster.ca/jfox/Books/Companion/}
#' @refereces Michael Friendly. Georges Monette. John Fox. "Elliptical Insights: Understanding Statistical Methods through Elliptical Geometry."
#' Statist. Sci. 28 (1) 1 - 39, February 2013. URL: \url{https://projecteuclid.org/journals/statistical-science/volume-28/issue-1/Elliptical-Insights-Understanding-Statistical-Methods-through-Elliptical-Geometry/10.1214/12-STS402.full}
#'
#' @param level The level at which to draw an ellipse,
#' or, if `type="euclid"`, the radius of the circle to be drawn.
#' @param type The type of ellipse.
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