Get a point estimate of the covariance or
correlation matrix of population-level parameters
# S3 method for class '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) { # \dontrun{
fit <- brm(count ~ zAge + zBase * Trt + (1+Trt|visit),
data = epilepsy, family = gaussian(), chains = 2)
vcov(fit)
} # }