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

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

## 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.

## Value

covariance or correlation matrix of population-level parameters

## 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)
}
```