add_glyph_legend: Add Legend Layer to a ggplot
In sugarglider: Create Glyph-Maps of Spatiotemporal Data

add_glyph_legend

R Documentation

Add Legend Layer to a ggplot

Description

This function adds a custom legend layer to a ggplot object using the specified aesthetics and parameters.

Usage

add_glyph_legend(
  mapping = NULL,
  data = NULL,
  stat = "identity",
  position = "identity",
  show.legend = NA,
  x_minor = NULL,
  x_scale = identity,
  y_scale = identity,
  fill = "black",
  color = "black",
  linewidth = 0.5,
  alpha = 0.8,
  global_rescale = TRUE,
  inherit.aes = TRUE,
  ...
)

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)`).
`stat`	The statistical transformation to use on the data for this layer. When using a `⁠geom_*()⁠` function to construct a layer, the `stat` argument can be used the override the default coupling between geoms and stats. The `stat` argument accepts the following: A `Stat` ggproto subclass, for example `StatCount`. A string naming the stat. To give the stat as a string, strip the function name of the `stat_` prefix. For example, to use `stat_count()`, give the stat as `"count"`. For more information and other ways to specify the stat, see the layer stat documentation.
`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.
`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.
`x_minor`	Aesthetics to map plot coordinates for major and minor glyph components.
`x_scale`, `y_scale`	The scaling function applied to each set of minor values within a grid cell. Defaults to 'identity'.
`fill`	The fill color for the geometric object.
`color`	The color of the geometric object's border or line.
`linewidth`	The width of the geometric object's line.
`alpha`	The transparency level of the geometric object, ranging from 0 (fully transparent) to 1 (fully opaque).
`global_rescale`	A setting that determines whether to perform rescaling globally or on individual glyphs.
`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()`.
`...`	Additional arguments passed on to function.