Create a hurdle negative binomial specification

Usage

hurdle_negbin(formula = NULL)

Arguments

formula: Optional formula for the hurdle probability (P(Y > 0)). If NULL, uses intercept-only model.

Value

A ratiod_zi object

Examples

# Intercept-only hurdle
hurdle_negbin()
#> tulpaRatio Zero-Inflation Specification
#> ==================================
#> Type: Hurdle Negative Binomial 
#> Formula: ~ 1 (intercept only)

# Hurdle probability depends on sampling effort
hurdle_negbin(~ log_effort)
#> tulpaRatio Zero-Inflation Specification
#> ==================================
#> Type: Hurdle Negative Binomial 
#> Formula: ~log_effort