formula.gkwreg: Extract Formula from GKw Regression Model

In gkwreg: Generalized Kumaraswamy Regression Models for Bounded Data

Extract Formula from GKw Regression Model

Description

Extracts the model formula from a fitted Generalized Kumaraswamy regression model object. Properly handles formulas with up to 5 parts.

Usage

## S3 method for class 'gkwreg'
formula(x, ...)

Arguments

x	An object of class "gkwreg".
...	Currently not used.

Value

The formula used to fit the model. For multi-part formulas, returns an object of class "Formula".

Author(s)

Lopes, J. E.

See Also

gkwreg, update.gkwreg

Examples

data(GasolineYield)

# Simple formula
fit1 <- gkwreg(yield ~ batch + temp, data = GasolineYield, family = "kw")
formula(fit1)

# Two-part formula
fit2 <- gkwreg(yield ~ temp | batch, data = GasolineYield, family = "kw")
formula(fit2)

# Five-part formula
fit3 <- gkwreg(yield ~ temp | batch | temp | 1 | 1,
  data = GasolineYield, family = "gkw"
)
formula(fit3)

gkwreg documentation built on Nov. 27, 2025, 5:06 p.m.