geom_glowpoint: Points

Description Usage Arguments Value Aesthetics Examples

View source: R/geom-glowpoint.r

Description

The point geom is used to create scatterplots. [geom_glowpoint()] is designed as a drop in replacement for [geom_point()] with an added glow beneath the point to make a busy plot more aesthetically appealing or to make points stand out from the rest of the plot.

Usage

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geom_glowpoint(
  mapping = NULL,
  data = NULL,
  stat = "identity",
  position = "identity",
  ...,
  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

The statistical transformation to use on the data for this layer, as a string.

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.

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()].

Value

a layer to add to a plot.

Aesthetics

Adds 3 new aesthetics to [geom_point()]: * shadowcolour defaults to the same color as the point, controls the color of the glow * shadowsize defaults to size, controls the sie of the shadow. * shadowalpha defaults to 0.06 * alpha or 0.06, controls the alpha of the glow

Examples

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library( ggplot2 )
p <- ggplot(mtcars, aes(wt, mpg))
p + geom_shadowpoint()

ggshadow documentation built on Jan. 22, 2021, 5:12 p.m.