Transform a set of parameter values to the unconstrained scale

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

Usage

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. A tuple is an unnamed list of its elements and a complex value an R complex number, as $constrain_variables() returns them. A zero-size variable has no unconstrained values and can be left out or included.

Value

A numeric vector of unconstrained parameter values.

See also

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

Examples

# \dontrun{
fit_mcmc <- cmdstanr_example("logistic", method = "sample", force_recompile = TRUE)
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
# }