Build model input data

Some types of models carry around code that builds the input data for the modeling, instead of relying on a single static file on disk. When necessary, this function is called internally by submit_model() to build the data for running the model, but they can also be called manually by users for other purposes.

build_data(.mod, .out_path = NULL, ...)

# S3 method for class 'bbi_stan_model'
build_data(.mod, .out_path = NULL, ...)

Arguments

.mod

a bbi_{.model_type}_model object.

.out_path

If NULL, the default, does not write any data to disk. Otherwise, pass a file path where the resulting data object should be written.

...

Arguments passed through to methods (currently none).

Value

Invisibly returns the data object returned from the relevant build function. Also optionally saves the object to disk if a valid file path is passed to .out_path.

The data object is returned invisibly because sometimes you will want to call this function solely for the side effect of writing the data to disk.

Details

Currently, only bbi_stan_model objects have this implemented. The <run>-standata.R file contains the code for building the Stan input data.

Methods (by class)

• build_data(bbi_stan_model): executes the function in <run>-standata.R and returns the list that will be passed to the data argument of cmdstanr::sample(). Also optionally writes the returned data list to json with cmdstanr::write_stan_json() if an .out_path is passed.