brms (version 2.21.0)

vcov.brmsfit: Covariance and Correlation Matrix of Population-Level Effects

Description

Get a point estimate of the covariance or correlation matrix of population-level parameters

Usage

# S3 method for brmsfit
vcov(object, correlation = FALSE, pars = NULL, ...)

Value

covariance or correlation matrix of population-level parameters

Arguments

object

An object of class brmsfit.

correlation

Logical; if FALSE (the default), compute the covariance matrix, if TRUE, compute the correlation matrix.

pars

Optional names of coefficients to extract. By default, all coefficients are extracted.

...

Currently ignored.

Details

Estimates are obtained by calculating the maximum likelihood covariances (correlations) of the posterior draws.

Examples

if (FALSE) {
fit <- brm(count ~ zAge + zBase * Trt + (1+Trt|visit),
           data = epilepsy, family = gaussian(), chains = 2)
vcov(fit)
}