ggformula: stat_qqline – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

stat_qqline

A Stat for Adding Reference Lines to QQ-Plots

Description

This stat computes quantiles of the sample and theoretical distribution for the purpose of providing reference lines for QQ-plots.

Usage

stat_qqline(
  mapping = NULL,
  data = NULL,
  geom = "line",
  position = "identity",
  ...,
  distribution = stats::qnorm,
  dparams = list(),
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

Arguments

`mapping`	An aesthetic mapping produced with `aes()` or `aes_string()`.
`data`	A data frame.
`geom`	A geom.
`position`	A position object.
`...`	Additional arguments
`distribution`	A quantile function.
`dparams`	A list of arguments for `distribution`.
`na.rm`	A logical indicating whether a warning should be issued when missing values are removed before plotting.
`show.legend`	A logical indicating whether legends should be included for this layer. If `NA`, legends will be include for each aesthetic that is mapped.
`inherit.aes`	A logical indicating whether aesthetics should be inherited. When `FALSE`, the supplied `mapping` will be the only aesthetics used.

Examples

data(penguins, package = "palmerpenguins")
ggplot(data = penguins, aes(sample = bill_length_mm)) +
  geom_qq() +
  stat_qqline(alpha = 0.7, color = "red", linetype = "dashed") +
  facet_wrap(~species)

ggformula

Formula Interface to the Grammar of Graphics

v0.10.1

MIT + file LICENSE

Authors

Daniel Kaplan [aut], Randall Pruim [aut, cre]

Initial release