er_plot_add_summary: Add a summary annotation layer

In erplots: Model-Agnostic Exposure-Response Plots

Add a summary annotation layer

Description

Adds the summary layer: a text/label annotation placed in whichever corner of the base panel is furthest from the observed data, computed from the raw ⁠(exposure, response)⁠ coordinates of the data.

Usage

er_plot_add_summary(
  object,
  model = NULL,
  style = NULL,
  keep_strata = NULL,
  conf_level = 0.95,
  summary_args = list(),
  ...
)

Arguments

object	Partially constructed plot (has S3 class er_plot).
model	A fitted exposure-response model, or NULL (the default). Only needed for builder styles (e.g. er_style_summary_pvalue()) that produce model-based summaries; a purely descriptive builder (e.g. er_style_summary_n()) ignores it.
style	Style used to draw the summary annotation layer. Can either be a string corresponding to one of the registered style labels (e.g., "pvalue", the default), or a builder function used to compute the relevant plot object (see "Styles" below).
keep_strata	Logical; whether this layer should use stratification. Defaults to TRUE when a stratification variable has been specified, and FALSE otherwise.
conf_level	Confidence level forwarded to er_summary() (used, e.g., for the conf_low/conf_high columns of its coefficients result – see ?er_model_interface). Defaults to 0.95. Ignored when model is NULL.
summary_args	A named list of additional arguments forwarded to er_summary() when generating summaries.
...	Additional named arguments forwarded to the style builder function when the plot is built.

Value

The input object, with the summary layer added.

Styles

The following pre-defined styles are available for this layer. Please see the documentation for the corresponding builder function to see what customisation options are available:

Label	Builder	Description
"pvalue"	er_style_summary_pvalue()	A formatted p-value from the model's er_summary() result (the default).
"n"	er_style_summary_n()	Observation counts; model-agnostic, works with model = NULL.
"coefficients"	er_style_summary_coefficients()	One line per model parameter, from er_summary()'s coefficients table.
"gof"	er_style_summary_gof()	A goodness-of-fit annotation (N/AIC/BIC/R-squared) from er_summary()'s glance table.

See er_style() for details on how style builder functions are defined for the exposure-response mini-grammar, should a custom style be required.

See Also

er_plot(), er_plot_add_model(), er_plot_add_quantiles(), er_plot_add_data(), er_plot_add_groups(), er_style()

Examples

if (requireNamespace("erglm", quietly = TRUE)) {
library(erglm)
mod <- erglm_model(ae1 ~ aucss, erglm_data, family = binomial())
erglm_data |>
  er_plot(aucss, ae1) |>
  er_plot_add_model(mod) |>
  er_plot_add_summary(model = mod) |>
  plot()

# a purely descriptive annotation, with no model at all
erglm_data |>
  er_plot(aucss, ae1) |>
  er_plot_add_summary(style = er_style_summary_n) |>
  plot()
}

erplots documentation built on Oct. 4, 2026, 5:06 p.m.