ccText: Draw text in a cell

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

Draw text in a cell

Description

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

Usage

ccText(
  x = NULL,
  y = NULL,
  labels,
  direction = NULL,
  facing = c("inside", "outside", "reverse.clockwise", "clockwise", "downward",
    "bending", "bending.inside", "bending.outside"),
  niceFacing = FALSE,
  adj = par("adj"),
  cex = 1,
  col = par("col"),
  font = par("font"),
  ...
)

Arguments

x	Data points on x-axis
y	Data points on y-axis
labels	Labels for each points
direction	deprecated, use facing instead.
facing	Facing of text. Please refer to vignette for different settings
niceFacing	Should the facing of text be adjusted to fit human eyes?
adj	offset for text. By default the text position adjustment is either horizontal or vertical in the canvas coordinate system. The "circular horizontal" offset can be set as a value in degree unit and the value should be wrapped by degree.
cex	Font size
col	Font color
font	Font style
...	Pass to text

Value

Object ccCellGeom

Examples

library(circlizePlus)
n <- 1000
df <- data.frame(
  sectors = sample(letters[1:8], n, replace = TRUE),
  x = rnorm(n), y = runif(n)
)
par1 <- ccPar("track.height" = 0.1)
cc <- ccPlot(sectors = df$sectors, x = df$x) + par1
track1 <- ccTrack(
  sectors = df$sectors, y = df$y,
  panel.fun = function(x, y) {
    circos.text(
      CELL_META$xcenter,
      CELL_META$cell.ylim[2] + mm_y(5),
      CELL_META$sector.index
    )
    circos.axis(labels.cex = 0.6)
  }
)
cell1 <- ccCell(sector.index = "a") + ccText(-1, 0.5, "text")
track1 <- track1 + cell1
cc <- cc + track1
cc

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