| line {stats} | R Documentation |
Robust Line Fitting
Description
Fit a line robustly as recommended in Exploratory Data Analysis.
Usage
line(x, y)
Arguments
x, y |
the arguments can be any way of specifying x-y pairs. See
|
Details
Cases with missing values are omitted.
Long vectors are not supported.
Value
An object of class "tukeyline".
Methods are available for the generic functions coef,
residuals, fitted, and print.
References
Tukey, J. W. (1977). Exploratory Data Analysis, Reading Massachusetts: Addison-Wesley.
See Also
lm.
Examples
require(graphics)
plot(cars)
(z <- line(cars))
abline(coef(z))
## Tukey-Anscombe Plot :
plot(residuals(z) ~ fitted(z), main = deparse(z$call))