R: Robust Line Fitting

line {eda}

R Documentation

Robust Line Fitting

This function fits a line robustly as recommended in Exploratory Data Analysis.

line(x, y)

coef(object, ...)
residuals(object, type, ...)
fitted(object, ...)
print(x, digits = max(3, getOption("digits") - 3), ...)

`x,y`	the arguments can be any way of specifying x-y pairs.
`object`	a `tukeyline` object, typically the result of `line(*)`.

An object of class tukeyline.
Methods are available for the generic functions coef, residuals, fitted, and print.

Tukey, J. W. (1977). Exploratory Data Analysis, Reading Massachusetts: Addison-Wesley.

library(eda)
data(cars)
plot(cars)
(z <- line(cars))
abline(coef(z))
## Tukey-Anscombe Plot :
plot(residuals(z) ~ fitted(z), main = deparse(z$call))