shapeGrob: The grob powering geom_shape

In ggforce: Accelerating 'ggplot2'

The grob powering geom_shape

Description

This is the underlying grob constructor for geom_shape(). It is exported for others to use but with limited support

Usage

shapeGrob(
  x = c(0, 0.5, 1, 0.5),
  y = c(0.5, 1, 0.5, 0),
  id = NULL,
  id.lengths = NULL,
  expand = 0,
  radius = 0,
  default.units = "npc",
  name = NULL,
  gp = gpar(),
  vp = NULL
)

Arguments

x	A numeric vector or unit object specifying x-locations.
y	A numeric vector or unit object specifying y-locations.
id	A numeric vector used to separate locations in x and y into multiple polygons. All locations with the same id belong to the same polygon.
id.lengths	A numeric vector used to separate locations in x and y into multiple polygons. Specifies consecutive blocks of locations which make up separate polygons.
expand	An expansion size to expand each shape with, given in units or a numeric refering to default.units
radius	The corner radius to apply to each shape, given in units or a numeric refering to default.units
default.units	A string indicating the default units to use if x, y, width, or height are only given as numeric vectors.
name	A character identifier.
gp	An object of class "gpar", typically the output from a call to the function gpar. This is basically a list of graphical parameter settings.
vp	A Grid viewport object (or NULL).

Value

A grob of class shape or, of expand and radius are 0 a regular polygon grob

ggforce documentation built on June 18, 2025, 5:08 p.m.