Internal function to validate and prepare data for hurdle demand model fitting.
Usage
validate_hurdle_data(data, y_var, x_var, id_var)
Arguments
- data
A data frame.
- y_var
Character string, name of consumption variable.
- x_var
Character string, name of price variable.
- id_var
Character string, name of subject ID variable.
Value
A cleaned data frame ready for model fitting.
