Rectangle layer

Adds a rectangle or tile layer. Use for heatmaps, grid cells, Gantt charts, or any plot where both x and y span a range.

Usage

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

Arguments

plot

A plotit object

mapping

Optional new aesthetics

data

Optional data for this layer

position

Position adjustment.

...

Other arguments passed to geom_tile

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

Vega-Lite: Rect

AntV G2: Cell / Rect

Examples

df <- expand.grid(x = 1:5, y = 1:5)
df$z <- df$x * df$y
plotit(df, encode(x = x, y = y, fill = z)) |> mark_rect()