getCovariateFormula {nlme}

Extract Covariates Formula

Description

The right hand side of formula(object), without any conditioning expressions (i.e. any expressions after a | operator) is returned as a one-sided formula.

Usage

getCovariateFormula(object)

Arguments

object

any object from which a formula can be extracted.

Value

a one-sided formula describing the covariates associated with formula(object).

Author(s)

José Pinheiro and Douglas Bates [e-mail]

See Also

getCovariate

Examples

getCovariateFormula(y ~ x | g)
getCovariateFormula(y ~ x)