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A hand-drawn polar coordinate system

Source: R/coord-sketch.R
coord_sketch_polar.Rd

The polar companion to coord_sketch(): a drop-in replacement for ggplot2::coord_polar() that draws the circular grid hand-drawn. The radial and angular gridlines are rendered as roughened sketch grobs, so pie/rose charts and circular bar plots get a frame that matches the marks – under any theme. It reuses all of ggplot2's polar layout and only swaps how the grid is drawn.

Usage

coord_sketch_polar(
  theta = "x",
  start = 0,
  direction = 1,
  clip = "on",
  roughness = 0.5,
  bowing = 0.5,
  n_passes = 2L,
  seed = NULL,
  rough_grid = TRUE
)

Arguments

theta

Variable mapped to angle ("x" or "y"). Default "x".

start

Offset of the starting point, in radians. Default 0.

direction

1 clockwise, -1 anticlockwise. Default 1.

clip

Should drawing be clipped to the panel ("on", default) or not ("off")?

roughness, bowing, n_passes

Sketch parameters for the grid. Gentle defaults suited to gridlines (0.5, 0.5, 2).

seed

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

rough_grid

Roughen the gridlines? Default TRUE.

Value

A ggproto Coord object to add to a plot.

See also

Other sketch-theme: CoordSketch, element_sketch_line(), ggsketch_check_fonts(), ggsketch_save(), register_sketch_font(), scale_pressure_continuous(), scale_roughness_continuous(), scale_sketch, scale_tone_continuous(), sketch_palette(), theme_sketch()

Examples

library(ggplot2)
df <- data.frame(g = c("a", "b", "c", "d"), v = c(3, 5, 2, 4))
# A hand-drawn circular bar (rose) chart:
ggplot(df, aes(g, v, fill = g)) +
  geom_sketch_col(seed = 1L) +
  coord_sketch_polar(seed = 1L) +
  theme_sketch()