Plot Posterior Density vs Reference Distribution

Overlays the estimated posterior mean density with the N(0,1) reference distribution and, when available, the fitted DP mixture density. Requires ggplot2.

Usage

dpmirt_plot_density_compare(fit, reference = c("normal"), ...)

Arguments

fit

A dpmirt_fit object from dpmirt.

reference

Character. Currently only "normal" is supported, which overlays N(0,1).

...

Currently unused.

Value

A ggplot object.

See also

plot.dpmirt_fit, dpmirt_plot_density

Other visualization: dpmirt_plot_caterpillar(), dpmirt_plot_clusters(), dpmirt_plot_density(), dpmirt_plot_dp_density(), dpmirt_plot_icc(), dpmirt_plot_info(), dpmirt_plot_items(), dpmirt_plot_parameter_trace(), dpmirt_plot_pp_check(), dpmirt_plot_trace(), dpmirt_plot_wright_map(), plot.dpmirt_estimates(), plot.dpmirt_fit(), plot.dpmirt_sim()

Examples

if (FALSE) { # \dontrun{
sim <- dpmirt_simulate(200, 20, model = "rasch", seed = 42)
fit <- dpmirt(sim$response, model = "rasch", prior = "normal",
              niter = 5000, nburnin = 1000, seed = 123)

# Compare to N(0,1)
dpmirt_plot_density_compare(fit)

} # }