ccRaster: Add raster image

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

Add raster image

Description

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

Usage

ccRaster(
  image,
  x,
  y,
  width,
  height,
  facing = c("inside", "outside", "reverse.clockwise", "clockwise", "downward",
    "bending.inside", "bending.outside"),
  niceFacing = FALSE,
  scaling = 1
)

Arguments

image	A raster object, or an object that can be converted by as.raster.
x	Position of the center of the raster image, measued in the data coordinate in the cell.
y	Position of the center of the raster image, measued in the data coordinate in the cell.
width	Width of the raster image. When facing is one of "inside", "outside", "clockwise" and "reverse.clockwise", the image should have absolute size where the value of width should be specified like 20mm, 1cm or 0.5inche. When facing is one of bending.inside and bending.outside, the value of width is measured in the data coordinate in the cell.
height	Height of the raster image. Same format as width. If the value of height is omit, default height is calculated by taking the aspect ratio of the original image. But when facing is one of bending.inside and bending.outside, height is mandatory to set.
facing	Facing of the raster image.
niceFacing	Facing of text. Please refer to vignette for different settings.
scaling	Scaling factor to resize the raster image.

Value

Object ccCellGeom

Examples

library(circlizePlus)
library(png)
image <- system.file("extdata", "Rlogo.png", package = "circlize")
image <- as.raster(readPNG(image))
library(circlizePlus)
cc <- ccPlot(sectors = letters[1:4], xlim = c(0, 10))
track <- ccTrack(ylim = c(0, 1))
cell <- ccCell(sector.index = "a") + ccRaster(image = image, x = 5, y = 0.5,
width = "2cm", height = "2cm", facing = "inside", niceFacing = TRUE)
track <- track + cell
cc + track

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