Treemap layer — mark_treemap • plotit

Creates a treemap showing hierarchical data as nested rectangles. Requires the treemapify package. Data should contain area, subgroup, and optionally subgroup2 columns.

Usage

mark_treemap(
  plot,
  mapping = NULL,
  data = NULL,
  position = NULL,
  ...,
  rasterize = FALSE,
  rasterize_dpi = 300,
  rasterize_dev = "cairo"
)

Arguments

plot: A plotit object
mapping: Optional new aesthetics. Must include area for rectangle sizing.
data: Optional data for this layer
position: Position adjustment.
...: Other arguments passed to geom_treemap
rasterize: If TRUE, rasterize via ggrastr::rasterise().
rasterize_dpi: DPI for rasterization (default 300).
rasterize_dev: Graphics device for rasterization (default "cairo").

Value

Modified plotit object

References

AntV G2: Treemap (graphlib)

Examples

if (FALSE) { # \dontrun{
if (requireNamespace("treemapify", quietly = TRUE)) {
  df <- data.frame(
    group = c("A", "B", "C"),
    subgroup = c("a1", "a2", "b1"),
    size = c(30, 20, 50))
  plotit(df, encode(area = size, fill = group,
                    subgroup = subgroup)) |>
    mark_treemap()
}
} # }