scale_duke_continuous: Continuous scale constructor.

In duke: Creating a Color-Blind Friendly Duke Color Package

Continuous scale constructor.

Description

Applies a Duke branded and accessible continuous color scale to ggplot geometric objects. It is applicable for both fill and color arguments. Defines gradient scale from dark to light to improve visibility and contrast for readers.

Usage

scale_duke_continuous(
  ...,
  low = "#00539B",
  high = "#E2E6ED",
  space = "Lab",
  na.value = "#666666",
  guide = "colourbar",
  aesthetics = c("colour", "color", "fill")
)

Arguments

...	Arguments passed on to continuous_scale().
low	Low end of color gradient.
high	High end of color gradient.
space	Color space in which to calculate gradient.
na.value	Color used for NA values.
guide	Type of legend. "colorbar" for continuous scale, "legend" for discrete scale.
aesthetics	String or vector of strings detailing what aesthetic features this continuous scale can apply to.

Value

a visualization with continuous duke color scale

Examples

library(ggplot2)
library(palmerpenguins)

# default
ggplot(penguins, aes(x = bill_depth_mm, y = bill_length_mm, color = body_mass_g)) +
  geom_point()

# vs. with Duke scale
ggplot(penguins, aes(x = bill_depth_mm, y = bill_length_mm, color = body_mass_g)) +
  geom_point() +
  scale_duke_continuous()

duke documentation built on May 29, 2024, 10:39 a.m.