Update a gls Object

DESCRIPTION:

The non-missing arguments in the call to the update.gls method replace the corresponding arguments in the original call used to produce object and gls is used with the modified call to produce an updated fitted object.

USAGE:

update(object, model, data, correlation, weights, subset, method, 
       na.action, control) 

REQUIRED ARGUMENTS:

object
an object inheriting from class gls, representing a generalized least squares fitted linear model.

OPTIONAL ARGUMENTS:

other arguments
defined as in gls. See that functions documentation for descriptions and default values for these arguments.

VALUE:

an updated gls object.

SEE ALSO:

EXAMPLES:

fm1 <- gls(follicles ~ sin(2*pi*Time) + cos(2*pi*Time), Ovary, 
           correlation = corAR1(form = ~ 1 | Mare)) 
fm2 <- update(fm1, weights = varPower())