GWRM (version 2.1.0.4)

drop1.gw: Drop All Possible Single Terms to a GWRM Model

Description

Compute all the single terms in the scope argument that can be dropped from the GWRM model, fit those models and compute a table of the changes in fit.

Usage

# S3 method for gw
drop1(object, scope, test = c("none", "Chisq"), k = 2, trace = FALSE, ...)

Arguments

object

a fitted object of class inheriting from "gw".

scope

a formula giving the terms to be considered for dropping.

test

"none", which considers the AIC criterion, or Chisq, which is the likelihood-ratio test.

k

the penalty constant in AIC / Cp.

trace

if TRUE, print out progress reports.

...

further arguments passed to or from other methods.

Value

An object of class "anova" summarizing the differences in fit between the models.

Examples

# NOT RUN {
data(goals)

fit0 <- gw(goals ~ offset(log(played)), data = goals)
summary(fit0)

fit1 <- step(fit0, ~ position)
summary(fit1)

# }