standata.brmsfit {brms}

Extract data passed to Stan from brmsfit objects

Description

Extract all data that was used by Stan to fit a brms model.

Usage

## S3 method for class 'brmsfit'
standata(
  object,
  newdata = NULL,
  re_formula = NULL,
  newdata2 = NULL,
  new_objects = NULL,
  incl_autocor = TRUE,
  ...
)

Arguments

object

An object of class brmsfit.

newdata

An optional data.frame for which to evaluate predictions. If NULL (default), the original data of the model is used. NA values within factors are interpreted as if all dummy variables of this factor are zero. This allows, for instance, to make predictions of the grand mean when using sum coding.

re_formula

formula containing group-level effects to be considered in the prediction. If NULL (default), include all group-level effects; if NA, include no group-level effects.

newdata2

A named list of objects containing new data, which cannot be passed via argument newdata. Required for some objects used in autocorrelation structures, or stanvars.

new_objects

Deprecated alias of newdata2.

incl_autocor

A flag indicating if correlation structures originally specified via autocor should be included in the predictions. Defaults to TRUE.

...

More arguments passed to standata.default. and validate_newdata.

Value

A named list containing the data passed to Stan.