create_ellipse: Create coordinates for a tolerance ellipse

In abnormally-distributed/cvreg: Cross Validation and Robust Estimation Utilities

Description

This takes a pair of variables and creates the coordinates needed to plot a tolerance ellipse.

Usage

create_ellipse(
  data,
  vars,
  cov.type = cov.ogk,
  cov.args = list(),
  level = 0.95,
  segments = 180
)

Arguments

data	a data frame.
vars	a character vector naming the two variables of interest.
cov.type	a covariance function, preferably from the cvreg, ICS, ICSNP, MNM, or rrcov packages.
cov.args	a list with named arguments to pass to cov.type.
level	The coverage level at which to draw an ellipse. The default is 0.95 for a 95 pct coverage of the data points. Must be greater than 0.50.
segments	The number of segments to be used in drawing the ellipse.

Value

a data frame consisting of coordinates.

abnormally-distributed/cvreg documentation built on May 3, 2020, 3:45 p.m.