Plot Prior Density of the First Size-Biased DP Weight

Plot Prior Density of the First Size-Biased DP Weight

Usage

plot_w1_prior(
  fit = NULL,
  a = NULL,
  b = NULL,
  engine = c("ggplot2", "base"),
  base_size = 11,
  thresholds = c(0.5, 0.9),
  n_grid = 500,
  show = TRUE
)

Arguments

fit

A DPprior_fit object, or NULL if a, b provided directly.

a

Numeric; shape parameter (used if fit is NULL).

b

Numeric; rate parameter (used if fit is NULL).

engine

"ggplot2" (default) or "base".

base_size

Base font size.

thresholds

Strictly increasing numeric vector of exactly two tail thresholds in \((0,1)\) for the first size-biased DP weight (default: c(0.5, 0.9)).

n_grid

Number of grid points.

show

If TRUE, print the plot.

Value

A ggplot object or invisible(NULL) for base.

See also

DPprior_fit for fitting, plot.DPprior_fit for S3 plot method

Other visualization: DPprior_colors(), plot_K_prior(), plot_alpha_prior(), plot_dual_comparison(), plot_dual_dashboard(), plot_prior_dashboard(), plot_tradeoff_curve(), plot_tradeoff_dashboard(), theme_DPprior()

Examples

fit <- DPprior_fit(J = 50, mu_K = 5, var_K = 8)
plot_w1_prior(fit)



plot_w1_prior(a = 1.6, b = 1.2)