Chord diagram layer — mark

Creates a chord diagram showing pairwise relationships between groups. Requires the circlize package. Data should be an adjacency matrix or a data frame with from, to, and value columns.

Usage

mark_chord(
  plot,
  gap_width = 4,
  grid_colour = "grey80",
  link_colour = "grey30",
  link_alpha = 0.5,
  ...
)

Arguments

plot: A plotit object
gap_width: Gap between sectors in degrees (default 4).
grid_colour: Colour for the outer grid (default "grey80").
link_colour: Colour for the chord links (default "grey30").
link_alpha: Alpha transparency for links (default 0.5).
...: Other arguments passed to circlize::chordDiagram

Value

Modified plotit object

References

AntV G2: Chord (graphlib)

Examples

if (FALSE) { # \dontrun{
if (requireNamespace("circlize", quietly = TRUE)) {
  mat <- matrix(c(0, 5, 3, 2, 0, 4, 1, 3, 0), nrow = 3)
  rownames(mat) <- colnames(mat) <- c("A", "B", "C")
  plotit(as.data.frame(as.table(mat)), encode()) |>
    mark_chord()
}
} # }