geom_circle: Geom for drawing circles in the ggplot2 framework

Description Usage Arguments Format Examples

View source: R/geom-circle.r

Description

Circles are drawn with a specified radius centered at (x, y). This geom is very much exploratory - we are using it for drawing edges for self references. It is not explored for any more general use, so use with caution!

Usage

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GeomCircle

geom_circle(mapping = NULL, data = NULL, stat = "identity",
  position = "identity", na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, radius = 0.05, ...)

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.

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.

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.

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.

radius

numeric value giving the radius of the circle to be drawn (0-1 normalized scale)

...

other arguments passed on to layer. These are often aesthetics, used to set an aesthetic to a fixed value, like color = "red" or size = 3. They may also be parameters to the paired geom/stat.

Format

An object of class GeomCircle (inherits from Geom, ggproto) of length 5.

Examples

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# circles are drawn centered at x and y
library(ggplot2)
data(mpg)
ggplot(mpg, aes(displ, hwy)) + geom_circle(radius=0.1) + geom_point()
ggplot(mpg, aes(displ, hwy)) + geom_circle(linetype=2, radius=0.05, alpha=0.5)
ggplot(mpg, aes(displ, hwy)) + geom_circle(aes(linetype=factor(cyl)), radius=0.05, alpha=0.5)

Example output

Loading required package: ggplot2

geomnet documentation built on May 29, 2017, 9:10 a.m.