Updating and re-fitting a model
'update' updates and re-fits a model on the basis of an object of class 'drc'.
## S3 method for class 'drc' update(object, ..., evaluate = TRUE)
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. |
An object of class 'drc'.
Christian Ritz
## Fitting a four-parameter Weibull model model1 <- drm(ryegrass, fct = W1.4()) ## Updating 'model1' by fitting a three-parameter Weibull model instead model2 <- update(model1, fct = W1.3()) anova(model2, model1)
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