ob_variance: create double-headed arrow paths indicating variance

In ggdiagram: Object-Oriented Diagram Plots with 'ggplot2'

create double-headed arrow paths indicating variance

Description

create double-headed arrow paths indicating variance

Usage

ob_variance(
  x,
  where = "north",
  theta = 50,
  bend = 0,
  looseness = 1,
  arrow_head = the$arrow_head,
  resect = 2,
  ...
)

Arguments

x	object
where	Location on object. Can be numeric (degrees), degree, radian, turn, or named direction (e.g., "northwest", "east", "below", "left")
theta	angle width
bend	Angle by which the control points are rotated. Can be numeric (degrees), degree, radian, turn, or named direction (e.g., "northwest", "east", "below", "left"). Defaults to 0.
looseness	distance of control points as a ratio of the distance to the object's center (e.g., in a circle of radius 1, looseness = 1.5 means that that the control points will be 1.5 units from the start and end points.)
arrow_head	A 2-column matrix of polygon points
resect	A numeric(1) denoting millimeters or grid::unit to shorten the arrow head and fins.
...	<dynamic-dots> properties passed to style

Value

Returns an object of type ob_bezier

Examples

theta <- degree(seq(0, 360 - 45, 45))
ggdiagram() +
{x <- ob_circle(ob_polar(theta, r = 3))} +
ob_variance(x,
            label = ob_label(LETTERS[seq_along(c(theta))]),
            where = theta,
            looseness = 1.25)

ggdiagram documentation built on Sept. 15, 2025, 1:07 a.m.