obs_rng.stan File Reference

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Functions
array[] int	obs_rng (vector log_exp_obs, array[] real phi, int model_obs)

Function Documentation

obs_rng()

array[] int obs_rng	(	vector	log_exp_obs,
		array[]real	phi,
		int	model_obs )

Generate random draws from the observation model

Produces random draws from the specified observation model.

Parameters

log_exp_obs	Vector logarithm of expected observations.
phi	Dispersion parameter for the negative binomial model, ignored for the Poisson model. Should be an array with the first element used.
model_obs	Indicator of the model used (0 for Poisson, 1 for negative binomial with a quadratic mean-variance relationship, 2 for negative binomial with a linear mean-variance relationship).

Returns

An array of integer random draws corresponding to the observation counts under the specified model.

Note

Depending on the model_obs flag, this function uses either neg_binomial_2_log_rng for the negative binomial model or poisson_log_rng for the Poisson model to generate the random draws.

Definition at line 21 of file obs_rng.stan.