ccArrow: Draw an arrow

In circlizePlus: Using 'ggplot2' Feature to Write Readable R Code for Circular Visualization

Draw an arrow

Description

Object ccCellGeom will call the function circlize::circos.arrow while drawing.

Usage

ccArrow(
  x1,
  x2,
  y,
  width,
  arrow.head.length = NULL,
  arrow.head.width = width * 2,
  arrow.position = c("end", "start"),
  tail = c("normal", "point"),
  border = "black",
  col = "#FFCCCC",
  lty = par("lty"),
  ...
)

Arguments

x1	Start position of the arrow on the x-axis.
x2	End position of the arrow on the x-axis. Note x2 should be larger than x1. The direction of arrows can be controlled by arrow.position argument.
y	Position of the arrow on the y-axis. Note this is the center of the arrow on y-axis.
width	Width of the arrow body.
arrow.head.length	Length of the arrow head. Note the value should be smaller than the length of the arrow itself (which is x2 - x1).
arrow.head.width	Width of the arrow head.
arrow.position	Where is the arrow head on the arrow. If you want to the arrow in the reversed direction, set this value to "start".
tail	The shape of the arrow tail (the opposite side of arrow head).
border	Border color of the arrow.
col	Filled color of the arrow.
lty	Line style of the arrow.
...	Pass to polygon.

Value

Object ccCellGeom

Examples

library(circlizePlus)
cc <- ccPlot(sectors = letters[1:4], xlim = c(0, 10))
track <- ccTrack(ylim = c(0, 1))
cell <- ccCell(sector.index = "a") + ccArrow(x1 = 1, x2 = 9, y=0.5, width=0.5)
track <- track + cell
cc + track

circlizePlus documentation built on June 8, 2025, 10:42 a.m.