confEllipse: Bivariate Quality Control Ellipse

In s-huebler/rotateS21: Shiny Data Rotation

Description

This function has 2 main features. The first feature is the quality control ellipse chart itself. The chart can be used to visually asses bivariate normality. The shape and direction of the ellipse gives information about the covariance between the 2 data columns. The second feature is test points. A vector argument can be supplied to be plotted on the control chart. The point is plotted in red for easy viewing. The user can easily determine whether the point being tested falls inside the quality control ellipse.

Usage

confEllipse(data, vec = NULL, alpha = 0.05, formatted = TRUE)

Arguments

data	, a 2 column data frame
vec	, a test point in the form of a 2x1 bector
alpha	, a confidence level
formatted	, a logical argument to determine whether the data is formatted correctly

Examples

data(iris)
iris2<-iris[,c(1,2)]
confEllipse(iris2, c(6, 2.9))

s-huebler/rotateS21 documentation built on Dec. 22, 2021, 8:21 p.m.