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Convenient geometries for proportion bar plots

Source: R/stat_prop.R
geom_prop_bar.Rd

geom_prop_bar(), geom_prop_text() and geom_prop_connector() are variations of ggplot2::geom_bar(), ggplot2::geom_text() and geom_bar_connector() using stat_prop(), with custom default aesthetics: after_stat(prop) for x or y, and scales::percent(after_stat(prop)) for label.

Usage

geom_prop_bar(
  mapping = NULL,
  data = NULL,
  position = "stack",
  ...,
  width = 0.9,
  complete = NULL,
  default_by = "x"
)

geom_prop_text(
  mapping = ggplot2::aes(!!!auto_contrast),
  data = NULL,
  position = ggplot2::position_stack(0.5),
  ...,
  complete = NULL,
  default_by = "x"
)

geom_prop_connector(
  mapping = NULL,
  data = NULL,
  position = "stack",
  ...,
  width = 0.9,
  complete = "fill",
  default_by = "x"
)

Arguments

mapping

Set of aesthetic mappings created by aes(). If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.

data

The data to be displayed in this layer. There are three options:

If NULL, the default, the data is inherited from the plot data as specified in the call to ggplot().

A data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See fortify() for which variables will be created.

A function will be called with a single argument, the plot data. The return value must be a data.frame, and will be used as the layer data. A function can be created from a formula (e.g. ~ head(.x, 10)).

position

A position adjustment to use on the data for this layer. This can be used in various ways, including to prevent overplotting and improving the display. The position argument accepts the following:

  • The result of calling a position function, such as position_jitter(). This method allows for passing extra arguments to the position.

  • A string naming the position adjustment. To give the position as a string, strip the function name of the position_ prefix. For example, to use position_jitter(), give the position as "jitter".

  • For more information and other ways to specify the position, see the layer position documentation.

...

Additional parameters passed to ggplot2::geom_bar(), ggplot2::geom_text() or geom_bar_connector().

width

Bar width (0.9 by default).

complete

Name (character) of an aesthetic for those statistics should be completed for unobserved values (see example).

default_by

If the by aesthetic is not available, name of another aesthetic that will be used to determine the denominators (e.g. "fill"), or NULL or "total" to compute proportions of the total. To be noted, default_by = "x" works both for vertical and horizontal bars.

See also

geom_bar_connector()

Examples

library(ggplot2)
d <- as.data.frame(Titanic)
ggplot(d) +
  aes(x = Class, fill = Survived, weight = Freq) +
  geom_prop_bar() +
  geom_prop_text() +
  geom_prop_connector()


ggplot(d) +
  aes(y = Class, fill = Survived, weight = Freq) +
  geom_prop_bar(width = .5) +
  geom_prop_text() +
  geom_prop_connector(width = .5, linetype = "dotted")


ggplot(d) +
  aes(
    x = Class,
    fill = Survived,
    weight = Freq,
    y = after_stat(count),
    label = after_stat(count)
  ) +
  geom_prop_bar() +
  geom_prop_text() +
  geom_prop_connector()