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Sketchy 2-D density contours

Source: R/geom-sketch-contour.R
geom_sketch_density2d.Rd

geom_sketch_density2d() (alias geom_sketch_density_2d()) draws contour lines of a 2-D kernel density estimate with a hand-drawn stroke — the sketch analogue of ggplot2::geom_density_2d() / ggplot2::stat_density_2d(). Needs x and y aesthetics. Uses MASS (pulled in by ggplot2).

Usage

geom_sketch_density2d(
  mapping = NULL,
  data = NULL,
  stat = "density_2d",
  position = "identity",
  ...,
  roughness = 0.7,
  bowing = 0.5,
  n_passes = 2L,
  seed = NULL,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

geom_sketch_density_2d(
  mapping = NULL,
  data = NULL,
  stat = "density_2d",
  position = "identity",
  ...,
  roughness = 0.7,
  bowing = 0.5,
  n_passes = 2L,
  seed = NULL,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

Arguments

mapping

Set of aesthetic mappings created by ggplot2::aes().

data

Data to display.

stat

Statistical transformation (default "identity").

position

Position adjustment (default "identity").

...

Other arguments passed on to the layer.

roughness

Non-negative roughness parameter (0 = straight). Default 1.

bowing

Non-negative bowing multiplier. Default 1.

n_passes

Number of stroke passes for the double-stroke effect. Default 2.

seed

Integer seed for reproducibility. NULL uses getOption("ggsketch.seed", 1L).

na.rm

If FALSE (default), missing values are removed with a warning.

show.legend

Logical. Should this layer be included in the legend?

inherit.aes

If FALSE, override the default aesthetics.

Value

A ggplot2 layer object.

See also

Other sketch-geoms: GeomSketchAbline, GeomSketchBoxplot, GeomSketchBracket, GeomSketchCol, GeomSketchCurve, GeomSketchEllipse, GeomSketchHex, GeomSketchLine, GeomSketchLinerange, GeomSketchPath, GeomSketchPoint, GeomSketchPolygon, GeomSketchRect, GeomSketchRibbon, GeomSketchRug, GeomSketchSegment, GeomSketchSmooth, GeomSketchSpoke, GeomSketchViolin, annotate_sketch(), geom_sketch_bin2d(), geom_sketch_contour(), geom_sketch_count(), geom_sketch_density(), geom_sketch_function(), geom_sketch_histogram(), geom_sketch_jitter(), geom_sketch_qq(), geom_sketch_quantile(), geom_sketch_text()

Examples

library(ggplot2)
ggplot(faithful, aes(eruptions, waiting)) +
  geom_sketch_point(colour = "grey60", seed = 1L) +
  geom_sketch_density2d(colour = "#884EA0", seed = 2L) +
  theme_sketch()