Cheysson pattern scales for ggpattern

Pattern fill scales using Cheysson patterns from the Albums de Statistique Graphique. These scales work with ggpattern geoms to apply both colors and hatching patterns.

Usage

scale_pattern_fill_cheysson(palette = "1881_03", reverse = FALSE, ...)

scale_pattern_type_cheysson(palette = "1881_03", reverse = FALSE, ...)

scale_pattern_angle_cheysson(palette = "1881_03", reverse = FALSE, ...)

scale_pattern_density_cheysson(palette = "1881_03", reverse = FALSE, ...)

Arguments

palette

Name of palette (e.g., "1881_03") or palette type ("sequential", "diverging", "grouped", "category"). Default is "1881_03".

reverse

Whether to reverse the pattern order. Default is FALSE.

...

Additional arguments passed to ggplot2 scale functions

Details

These scales require the ggpattern package. Use with ggpattern geoms like geom_col_pattern(), geom_bar_pattern(), etc.

The scales apply multiple pattern aesthetics simultaneously:

• fill: Base fill color

• pattern_type: Type of pattern (none, stripe, crosshatch)

• pattern_fill: Color of pattern lines

• pattern_angle: Angle of stripes

• pattern_density: Density of pattern lines

Examples

if (FALSE) { # \dontrun{
library(ggplot2)
library(ggpattern)

# Basic bar chart with patterns
ggplot(mpg, aes(class, fill = class)) +
  geom_bar_pattern(
    aes(
      pattern_type = class,
      pattern_fill = class,
      pattern_angle = class
    ),
    pattern = "stripe",
    pattern_density = 0.3,
    pattern_spacing = 0.025,
    color = "black"
  ) +
  scale_pattern_fill_cheysson("category") +
  scale_pattern_type_cheysson("category") +
  theme_minimal()

# Use specific palette
ggplot(iris, aes(Species, Sepal.Width, fill = Species)) +
  geom_col_pattern(
    aes(pattern_type = Species, pattern_fill = Species),
    position = "dodge"
  ) +
  scale_pattern_fill_cheysson("1881_03")
} # }