Fit a Stan model in one call — bg_fit

Creates a data node (via bg_set_node_data), a cmdstanr_fit node consuming it, dispatches bg_run, and returns the fit node id invisibly while printing the run handle. Extra arguments in ... become the fit node's params (e.g. chains, seed, iter_warmup, iter_sampling).

Usage

bg_fit_stan(project, stan_file, data, label = NULL, ..., handle = NULL)

Arguments

project: A bg_handle.
stan_file: Path to the Stan model file. Relative paths resolve against the project root when the file exists there, and from the working directory otherwise.
data: A named list (or environment) of Stan data.
label: Optional label for the fit node.
...: Passed to the fit node as params (e.g. chains = 4).
handle: Deprecated synonym for project; accepted with a once-per-session warning.

Value

The fit node id, invisibly. The run handle is printed.

Details

Call bg_use_cmdstanr() first so the cmdstanr_fit kind is registered.