Creates normal violins with specified means and standard deviations

Usage

geom_normalviolin(
  mapping = NULL,
  data = NULL,
  mu = NULL,
  sigma = NULL,
  nsigma = 4,
  p_tail = NULL,
  p_lower_tail = NULL,
  p_upper_tail = NULL,
  tail_fill = "black",
  tail_alpha = 0.4,
  width = 0.6,
  upper_limit = NA,
  lower_limit = NA,
  face_left = TRUE,
  face_right = TRUE,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE,
  ...
)

Arguments

mapping: Set of aesthetic mappings created by ggplot2::aes().
data: The data to be displayed in this layer
mu: A vector of means
sigma: A vector of standard deviations
nsigma: The number of standard deviations each violin should extend
p_tail: The 2-tailed proportion that should be highlighted. Can be overridden with p_lower_tail and/or p_upper_tail
p_lower_tail: The proportion of the distribution that should be highlighted in the lower tail. Defaults to half of `p_tail`.
p_upper_tail: The proportion of the distribution that should be highlighted in the upper tail. Defaults to half of `p_tail`.
tail_fill: fill color for tails
tail_alpha: alpha value for tails
width: Width of normal violin
upper_limit: upper limit for polygons. Needed in case setting limits in scale_y_continuous or ylim distorts the polygons.
lower_limit: lower limit for polygons. Needed in case setting limits in scale_y_continuous or ylim distorts the polygons.
face_left: Display left half of violins. Defaults to `TRUE`
face_right: Display right half of violins. Defaults to `TRUE`
na.rm: If FALSE, the default, missing values are removed with a warning. If TRUE, missing values are silently removed.
show.legend: logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes. It can also be a named logical vector to finely select the aesthetics to display. To include legend keys for all levels, even when no data exists, use TRUE. If NA, all levels are shown in legend, but unobserved levels are omitted.
inherit.aes: If `FALSE`, overrides the default aesthetics, rather than combining with them.
...: Other arguments passed to `ggplot2::layer`

Value

A ggplot2 layer that can be added to a plot created with [ggplot()][ggplot2::ggplot()].

Aesthetics

geom_normviolin understands the following aesthetics (required aesthetics are in bold):

x
mu (mean of the normal distribution)
sigma (standard deviation of the normal distribution)
width (width of violin)
nsigma (number of standard deviations to which the violins extend)
p_tail (2-tailed proportion of tails highlighted)
p_upper_tail (proportion of upper tails highlighted)
p_lower_tail (proportion of lower tails highlighted)
face_left (display left half of violin?)
face_right (display right half of violin?)
color (of lines)
fill
alpha (of fills)
group
linetype
linewidth

Examples

library(ggplot2)
d <- data.frame(
  dist = c("A", "B"),
  dist_mean = c(80, 90),
  dist_sd = c(15, 10))

ggplot(data = d, aes(
  x = dist,
  mu = dist_mean,
  sigma = dist_sd,
  fill = dist)) +
  geom_normalviolin() +
  theme(legend.position = "none")