formula.gls {nlme}R Documentation

Extract gls Object Formula

Description

This method function extracts the linear model formula associated with x.

Usage

formula(x, ...)

Arguments

x an object inheriting from class gls, representing a generalized least squares fitted linear model.
... some methods for this generic require additional arguments. None are used in this method.

Value

a two-sided linear formula specifying the linear model used to obtain x.

Author(s)

Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu

See Also

gls

Examples

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

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