vcov {familiar}

Calculate variance-covariance matrix for a model

Description

Calculate variance-covariance matrix for a model

Usage

vcov(object, ...)

## S4 method for signature 'familiarModel'
vcov(object, ...)

Arguments

object

a familiarModel object

...

additional arguments passed to vcob methods for the underlying model, when available.

Details

This method extends the vcov S3 method. For some models vcov requires information that is trimmed from the model. In this case a copy of the variance-covariance matrix is stored with the model, and returned.

Value

Variance-covariance matrix of the model in the familiarModel object, if any.