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Plot prior predictive pairwise differences

Source: R/prior_predictive.R
plot.shrinkr_prior_contrasts.Rd

Creates a density plot of \(|\theta_i - \theta_j|\) from prior predictive samples. Useful for calibrating hierarchical priors. Styling matches plot.shrinkr_prior_pred() for visual consistency.

Usage

# S3 method for class 'shrinkr_prior_contrasts'
plot(x, by_pair = FALSE, ...)

Arguments

x

A shrinkr_prior_contrasts object from prior_pairwise_differences.

by_pair

Logical; if TRUE, facet by pair. If FALSE (default), pool all pairwise differences into a single plot.

...

Additional arguments (currently unused).

Value

A ggplot2 object.

See also

prior_pairwise_differences

Examples

priors <- list(
  mu = distributional::dist_normal(0, 5),
  tau = distributional::dist_truncated(distributional::dist_normal(0, 1), lower = 0)
)
prior_pred <- sample_prior_predictive(priors, n_groups = 3, n_draws = 50)
pw <- prior_pairwise_differences(prior_pred)
plot(pw)