Transform a set of parameter values to the unconstrained scale — fit-method-unconstrain_variables • cmdstanr

The $unconstrain_variables() method transforms input parameters to the unconstrained scale.

unconstrain_variables(variables)

Arguments

variables: (list) A list of parameter values to transform, in the same format as provided to the init argument of the $sample() method.

See also

log_prob(), grad_log_prob(), constrain_variables(), unconstrain_variables(), unconstrain_draws(), variable_skeleton(), hessian()

Examples

# \dontrun{
fit_mcmc <- cmdstanr_example("logistic", method = "sample", force_recompile = TRUE)
fit_mcmc$init_model_methods()
#> Compiling additional model methods...
fit_mcmc$unconstrain_variables(list(alpha = 0.5, beta = c(0.7, 1.1, 0.2)))
#> [1] 0.5 0.7 1.1 0.2
# }