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) 

REQUIRED ARGUMENTS:

object
any object from which a formula can be extracted.

VALUE:

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

SEE ALSO:

EXAMPLES:

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