drc (version 1.0-3)

update.drc: Updating and re-fitting a model

Description

'update' updates and re-fits a model on the basis of an object of class 'drc'.

Usage

## S3 method for class 'drc':
update(object, ..., evaluate = TRUE)

Arguments

object

an object of class 'drc'.

...

arguments to alter in object.

evaluate

logical. If TRUE model is re-fit; otherwise an unevaluated call is returned.

Value

• An object of class 'drc'.

Examples

## Fitting a four-parameter Weibull model
model1 <- multdrc(FA, fct = w4())

## Updating 'model1' by fitting a three-parameter Weibull model
model2 <- update(model1, fct = w3())
anova(model2, model1)


rm(model1, model2)