brms (version 0.7.0)

posterior_samples.brmsfit: Extract posterior samples

Description

Extract posterior samples of specified parameters

Usage

## S3 method for class 'brmsfit':
posterior_samples(x, pars = NA, parameters = NA,
  exact_match = FALSE, add_chains = FALSE, subset = NULL,
  as.matrix = FALSE, ...)

posterior_samples(x, pars = NA, ...)

Arguments

x

An R object typically of class brmsfit

pars

Names of parameters for which posterior samples should be returned, as given by a character vector or regular expressions. By default, all posterior samples of all parameters are extracted

parameters

A deprecated alias of pars

exact_match

Indicates whether parameter names should be matched exactly or treated as regular expression. Default is FALSE.

add_chains

A flag indicating if the returned data.frame should contain information on the chains

subset

A numeric vector indicating the rows (i.e., posterior samples) to be returned. If NULL (the default), all posterior samples are returned.

as.matrix

Should the output be a matrix instead of a data.frame? Defaults to FALSE

...

additional arguments

Value

• A data frame containing the posterior samples, with one column per parameter.

Details

Currently there are methods for brmsfit objects.

Examples

fit <- brm(rating ~ treat + period + carry + (1|subject), 
           data = inhaler, family = "cumulative")

#extract posterior samples of fixed effects 
samples1 <- posterior_samples(fit, "^b")
head(samples1)

#extract posterior samples of standard deviations of random effects
samples2 <- posterior_samples(fit, "^sd")
head(samples2)