draws_array: The 'draws_array' format

In posterior: Tools for Working with Posterior Distributions

The draws_array format

Description

The as_draws_array() methods convert objects to the draws_array format. The draws_array() function creates an object of the draws_array format based on a set of numeric vectors. See Details.

Usage

as_draws_array(x, ...)

## Default S3 method:
as_draws_array(x, ...)

## S3 method for class 'draws_array'
as_draws_array(x, ...)

## S3 method for class 'draws_matrix'
as_draws_array(x, ...)

## S3 method for class 'draws_df'
as_draws_array(x, ...)

## S3 method for class 'draws_list'
as_draws_array(x, ...)

## S3 method for class 'draws_rvars'
as_draws_array(x, ...)

## S3 method for class 'mcmc'
as_draws_array(x, ...)

## S3 method for class 'mcmc.list'
as_draws_array(x, ...)

draws_array(..., .nchains = 1)

is_draws_array(x)

Arguments

x	An object to convert to a draws_array object.
...	For as_draws_array(): Arguments passed to individual methods (if applicable). For draws_array(): Named arguments containing numeric vectors each defining a separate variable.
.nchains	(positive integer) The number of chains. The default is 1.

Details

Objects of class "draws_array" are 3-D arrays with dimensions "iteration", "chain", and "variable". See Examples.

Value

A draws_array object, which has classes c("draws_array", "draws", "array").

See Also

Other formats: draws, draws_df(), draws_list(), draws_matrix(), draws_rvars()

Examples

x1 <- as_draws_array(example_draws())
class(x1)
print(x1)
str(x1)

x2 <- draws_array(a = rnorm(10), b = rnorm(10), c = 1)
class(x2)
print(x2)
str(x2)

posterior documentation built on April 4, 2025, 4:44 a.m.