find_empty: a function to identify factors that only have individuals in a single level

find_empty is a function that identifies which factors have empty levels.

find_empty(data, models = NULL, covariates = NULL, ...)

Arguments

data: Source data
models: A model_specification object. If passed, the function will find empty levels for all factors in all specified models.
covariates: Factors to check for empty levels If a model specification object is passed, this parameter is ignored.
...: Optional arguments to find_empty (not currently used).

An object that inherits from classes emptylevels that contains information about the factors with empty levels

Alexander Breskin