16  Exposing stan code


Sebastian Weber -

In some situations it can be useful to make use of the Stan functions brms uses inside the Stan programs it creates. This is for example the case when creating a custom family as described in the vignette on custom response distributions. Whenever defining a custom family, one does provide Stan code snippets to brms which are used to setup the respective Stan model. Since the same functions are then useful for post-proccessing of the model posterior, the created functions can be used in R as well using the expose_functions from brms. Please refer to the vignette on custom families and the help on the expose function utility function ?expose_functions.