getGroupsFormula {saeTrafo}

Extract grouping formula from a saeTrafo object

Description

Method getGroupsFormula.NER extracts the grouping formula from an saeTrafo object.

Usage

## S3 method for class 'NER'
getGroupsFormula(object, ...)

Arguments

object

an object of type "NER".

...

additional arguments that are not used in this method.

Details

The generic function getGroupsFormula is imported from package nlme and re-exported to make the S3-methods available, even though the nlme package itself is not loaded or attached. For default documentation, see getGroupsFormula.

Value

A one-sided formula.

See Also

NER_Trafo getGroupsFormula

Examples

# Example to extract grouping formula

# Load Data
data("eusilcA_smp")
data("pop_area_size")
data("pop_mean")
data("pop_cov")

# Nested error regression model
NER_model <- NER_Trafo(fixed = eqIncome ~ gender + eqsize + cash +
                       self_empl + unempl_ben + age_ben + surv_ben +
                       sick_ben + dis_ben + rent + fam_allow + house_allow +
                       cap_inv + tax_adj,
                       smp_domains = "district",
                       pop_area_size = pop_area_size,
                       pop_mean = pop_mean, pop_cov = pop_cov,
                       smp_data = eusilcA_smp)

getGroupsFormula(NER_model)