R: Brief Summary of Model Fit for a glm or loglm Object

modFit {vcdExtra} | R Documentation

## Brief Summary of Model Fit for a glm or loglm Object

### Description

Formats a brief summary of model fit for a `glm` or `loglm` object, showing the likelihood ratio Chisq (df) value and or AIC. Useful for inclusion in a plot title or annotation.

### Usage

    modFit(x, ...)
    ## S3 method for class 'glm'
    modFit(x, stats="chisq", digits=2, ...)
    ## S3 method for class 'loglm'
    modFit(x, stats="chisq", digits=2, ...)

### Arguments

`x` | A `glm` or `loglm` object
`...` | Arguments passed down
`stats` | One or more of `chisq` or `aic`, determining the statistics displayed.
`digits` | Number of digits after the decimal point in displayed statistics.

### Value

A character string containing the formatted values of the chosen statistics.

### Author(s)

Michael Friendly

### See Also

`Summarise` (soon to be deprecated), `LRstats`

### Examples

    data(Mental)
    require(MASS)
    (Mental.tab <- xtabs(Freq ~ ses+mental, data=Mental))
    (Mental.mod <- loglm(~ses+mental, Mental.tab))
    Mental.mod
    modFit(Mental.mod)

    # use to label mosaic()
    mosaic(Mental.mod, main=paste("Independence model,", modFit(Mental.mod)))

[Package vcdExtra version 0.7-1 Index]