update()
on an
lmRob
Object
update()
for objects inheriting from
class
lmRob
. See
update
for the general behavior of this function
and for the interpretation of the arguments.
update.lmRob(object, formula, evaluate=T, class, ...)
If
formula
is missing,
update.lmRob
alternates between the initial
estimates and final estimates. If
formula
is present,
update.lmRob
functions just like
update.default
.
Gervini, D., and Yohai, V. J. (1999). A class of robust and fully
efficient regression estimates, mimeo, Universidad de Buenos Aires.
Yohai, V., Stahel, W. A., and Zamar, R. H. (1991): A procedure for robust
estimation and inference in linear regression, in Stahel, W. A. and Weisberg,
S. W., Eds.,
Directions in robust statistics and diagnostics, Part II.
Springer-Verlag, New York.
# Alternates between initial and final estimates stack.df <- data.frame(Loss=stack.loss,stack.x) stack.final <- lmRob(Loss~Air.Flow+Water.Temp+Acid.Conc., data=stack.df) stack.initial <- update(stack.final)