ggforce: geom_autohistogram – R documentation

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geom_autohistogram

A distribution geoms that fills the panel and works with discrete and continuous data

Description

These versions of the histogram and density geoms have been designed specifically for diagonal plotting with facet_matrix(). They differ from ggplot2::geom_histogram() and ggplot2::geom_density() in that they defaults to mapping x and y to .panel_x and .panel_y respectively, they ignore the y scale of the panel and fills it out, and they work for both continuous and discrete x scales.

Usage

geom_autodensity(
  mapping = NULL,
  data = NULL,
  stat = "autodensity",
  position = "floatstack",
  ...,
  bw = "nrd0",
  adjust = 1,
  kernel = "gaussian",
  n = 512,
  trim = FALSE,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

geom_autohistogram(
  mapping = NULL,
  data = NULL,
  stat = "autobin",
  position = "floatstack",
  ...,
  bins = NULL,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

Arguments

`mapping`	Set of aesthetic mappings created by `aes()` or `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)`).
`stat`	Use to override the default connection between `geom_density` and `stat_density`.
`position`	Position adjustment, either as a string, or the result of a call to a position adjustment function.
`...`	Other arguments passed on to `layer()`. These are often aesthetics, used to set an aesthetic to a fixed value, like `colour = "red"` or `size = 3`. They may also be parameters to the paired geom/stat.
`bw`	The smoothing bandwidth to be used. If numeric, the standard deviation of the smoothing kernel. If character, a rule to choose the bandwidth, as listed in `stats::bw.nrd()`.
`adjust`	A multiplicate bandwidth adjustment. This makes it possible to adjust the bandwidth while still using the a bandwidth estimator. For example, `adjust = 1/2` means use half of the default bandwidth.
`kernel`	Kernel. See list of available kernels in `density()`.
`n`	number of equally spaced points at which the density is to be estimated, should be a power of two, see `density()` for details
`trim`	If `FALSE`, the default, each density is computed on the full range of the data. If `TRUE`, each density is computed over the range of that group: this typically means the estimated x values will not line-up, and hence you won't be able to stack density values. This parameter only matters if you are displaying multiple densities in one plot or if you are manually adjusting the scale limits.
`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.
`inherit.aes`	If `FALSE`, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. `borders()`.
`bins`	Number of bins. Overridden by `binwidth`. Defaults to 30.

Examples

# A matrix plot with a mix of discrete and continuous variables
p <- ggplot(mpg) +
  geom_autopoint() +
  facet_matrix(vars(drv:fl), layer.diag = 2, grid.y.diag = FALSE)
p

# Diagonal histograms
p + geom_autohistogram()

# Diagonal density distributions
p + geom_autodensity()

# You can use them like regular layers with groupings etc
p + geom_autodensity(aes(colour = drv, fill = drv),
                     alpha = 0.4)

ggforce

Accelerating 'ggplot2'

v0.3.3

MIT + file LICENSE

Authors

Thomas Lin Pedersen [cre, aut] (<https://orcid.org/0000-0002-5147-4711>), RStudio [cph]

Initial release