Get or set the Stan engine — mlumr

mlumr fits its models through rstan by default. mlumr_engine("cmdstanr") switches to cmdstanr for the session; the choice is stored in options(mlumr.stan_engine), so a permanent default belongs in .Rprofile. When cmdstanr or CmdStan is missing, an interactive session is offered their installation (cmdstanr from stan-dev's maintained repository); otherwise the install commands are printed and the engine is left unchanged.

Usage

mlumr_engine(engine = NULL)

Arguments

engine: "rstan" or "cmdstanr", matched exactly. NULL (the default) returns the current engine without changing it.

Value

The current engine, invisibly when setting.

Examples

mlumr_engine()
#> [1] "rstan"
if (FALSE) { # \dontrun{
mlumr_engine("cmdstanr")
} # }