vcov.slim: Extract Variance-Covariance Matrix from a 'slim' Object
Description
'vcov' method for class 'slim'.
Usage
# S3 method for slim
vcov(object, empirical = TRUE, ...)
Arguments
object
an object of class 'slim', usually, a result of a call to
'slim'.
empirical
logical indicating if empirical variances of y should be
used in estimating standard errors (the default). Empirical standard errors
should be used unless covariances have been well modelled.
...
arguments passed to or from other methods.
Value
a matrix of the estimated covariances between the parameter
estimates.