stanmodel-method-gqs: Draw samples of generated quantities from a Stan model

gqsR Documentation

Draw samples of generated quantities from a Stan model


Draw samples from the generated quantities block of a stanmodel.


  ## S4 method for signature 'stanmodel'
gqs(object, data = list(), draws, 
    seed =$integer.max, size = 1L))



An object of class stanmodel.


A named list or environment providing the data for the model or a character vector for all the names of objects used as data. See the Passing data to Stan section in stan.


A matrix of posterior draws, typically created by calling as.matrix on a stanfit.


The seed for random number generation. The default is generated from 1 to the maximum integer supported by R on the machine. When a seed is specified by a number, as.integer will be applied to it. If as.integer produces NA, the seed is generated randomly. The seed can also be specified as a character string of digits, such as "12345", which is converted to integer.


An object of S4 class stanmodel representing the fitted results.



signature(object = "stanmodel")

Evaluate the generated quantities block of a Stan program by supplying data and the draws output from a previous Stan program.

See Also

stanmodel, stanfit, stan


## Not run: 
m <- stan_model(model_code = 'parameters {real y;} model {y ~ normal(0,1);}')
f <- sampling(m, iter = 300)
mc <-
parameters {real y;}
generated quantities {real y_rep = normal_rng(y, 1);}
m2 <- stan_model(model_code = mc)
f2 <- gqs(m2, draws = as.matrix(f))

## End(Not run)

rstan documentation built on Sept. 8, 2022, 5:06 p.m.