Plot residual diagnostics panels for MARS models — plot_residual

Draw a compact three-panel residual diagnostic figure showing raw residuals versus fitted values, a studentized residual QQ plot, and a studentized residual histogram.

plot_residual_panel(
  fit,
  main_prefix = "Model",
  fitted_jitter = 0,
  hist_breaks = "auto",
  hist_rug = TRUE,
  ...
)

Arguments

fit: A fitted mars object.
main_prefix: Prefix used for the panel titles.
fitted_jitter: Non-negative numeric scalar giving the horizontal jitter amount applied to fitted values in the raw-residual-versus-fitted panel. Use 0 to disable jitter.
hist_breaks: Histogram breaks for the studentized residual panel. Use "auto" to select "Sturges" when fewer than 30 finite studentized residuals are available and "FD" otherwise. Passed to hist() after resolution.
hist_rug: Logical; if TRUE, draw a rug plot beneath the histogram using the finite studentized residuals.
...: Additional arguments passed to the first plot() call.

Value

Invisibly returns a data frame containing the fitted values, jittered fitted values used for plotting, raw residuals, studentized residuals, and the histogram break rule used.