getGroups {saeTrafo}

Extract grouping factors from an saeTrafo object

Description

Method getGroups.NER extracts grouping factors from a saeTrafo object.

Usage

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

Arguments

object

an object of type "NER".

...

additional arguments that are not used in this method.

Details

The generic function getGroups 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 getGroups.

Value

A vector containing the grouping factors.

See Also

NER_Trafo, getGroups

Examples

# Example to extract grouping factors

# 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)

getGroups(NER_model)