IRIS Toolbox Reference Manual

# Posterior objects and functions

Posterior objects, `poster`, are used to evaluate the behaviour of the posterior dsitribution, and to draw model parameters from the posterior distibution.

Posterior objects are set up within the `model/estimate` function and returned as the second output argument - the set up and initialisation of the posterior object is fully automated in this case. Alternatively, you can set up a posterior object manually, by setting all its properties appropriately.

Poster methods:

#### Constructor

- `poster` - Create new, empty posterior simulation (poster) object.

#### Evaluating posterior density

- `arwm` - Adaptive random-walk Metropolis posterior simulator.
- `eval` - Evaluate posterior density at specified points.
- `regen` - Regeneration time MCMC Metropolis posterior simulator.

#### Chain statistics

- `stats` - Evaluate selected statistics of ARWM chain.

#### Getting on-line help on model functions

    help poster
    help poster/function_name

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