brms (version 0.9.1)

update.brmsfit: Update brms models

Description

This method allows to update an existing brmsfit object

Usage

## S3 method for class 'brmsfit':
update(object, formula., newdata = NULL, ...)

Arguments

object

object of class brmsfit

formula.

changes to the formula; for details see update.formula

newdata

optional data.frame to update the model with new data

...

other arguments passed to brm

Examples

fit1 <- brm(time | cens(censored) ~ age * sex + disease + (1|patient), 
            data = kidney, family = gaussian("log"))
summary(fit1)

## remove effects of 'disease'
fit2 <- update(fit1, formula. = ~ . - disease)
summary(fit2)

## remove the group specific term of 'patient' and
## change the data (just take a subset in this example)
fit3 <- update(fit1, formula. = ~ . - (1|patient), 
               newdata = kidney[1:38, ])
summary(fit3)

## use another family and add fixed effects priors
fit4 <- update(fit1, family = weibull(), inits = "0",
               prior = set_prior("normal(0,5)"))
summary(fit4)