arrowheadr (version 1.0.2)

arrow_head_ellipse: Make arrrowhead with ellipse

Description

Make arrrowhead with ellipse

Usage

arrow_head_ellipse(
  a = 1,
  b = 1,
  superellipse = 2,
  rotate = 0,
  rescale = c(1, 1),
  nudge = c(0, 0),
  transformations = c("unitizer", "rotater", "rescaler", "nudger"),
  n = 361,
  plot = FALSE
)

Value

a matrix

Arguments

a

width of ellipse

b

height of ellipse

superellipse

parameter for specifying superellipses. Can be of length 1 or 2

rotate

rotation angle in radians

rescale

a single value or 2-length vector for scaling in x and y

nudge

a single value or 2-length vector for nudging in x and y

transformations

a vector of transformation functions

n

number of points in polygon

plot

plot arrowhead if TRUE

Examples

ellipsehead <- arrow_head_ellipse(plot = TRUE, b = .5)
ellipsehead_spaced <- arrow_head_ellipse(
  plot = TRUE,
  b = .5,
  rescale = .45,
  nudge = c(.55, 0)
)
# Make regular polygon with n - 1 sides
pentagon <- arrow_head_ellipse(n = 6, plot = TRUE)
# make a superellipses
star4 <- arrow_head_ellipse(superellipse = .5, plot = TRUE)
squircle <- arrow_head_ellipse(superellipse = 3, plot = TRUE, rotate = pi / 4)
longboat <- arrow_head_ellipse(plot = TRUE, b = 1, a = 4, superellipse = c(3,.5))