Color scale constructor for OpenIntro IMS colors

Usage

scale_color_openintro(palette = "main", discrete = TRUE, reverse = FALSE, ...)

Arguments

palette: Character name of palette in openintro_palettes
discrete: Boolean indicating whether color aesthetic is discrete or not
reverse: Boolean indicating whether the palette should be reversed
...: Additional arguments passed to ggplot2::discrete_scale() or ggplot2::scale_color_gradientn(), used respectively when discrete is TRUE or FALSE

Examples


library(ggplot2)

# Categorical variable with three levels
ggplot(evals, aes(
  x = bty_avg, y = score,
  color = rank, shape = rank
)) +
  geom_jitter(size = 2, alpha = 0.6) +
  scale_color_openintro("three")


# Categorical variable with two levels
ggplot(evals, aes(
  x = bty_avg, y = score,
  color = language, shape = language
)) +
  geom_jitter(size = 2, alpha = 0.6) +
  scale_color_openintro("two")


# Continuous variable
# Generates a palette, but not recommended
ggplot(evals, aes(
  x = bty_avg, y = score,
  color = score
)) +
  geom_jitter(size = 2, alpha = 0.8) +
  scale_color_openintro(discrete = FALSE)


# For continous palettes
# use scale_color_gradient instead
ggplot(evals, aes(
  x = bty_avg, y = score,
  color = score
)) +
  geom_jitter(size = 2) +
  scale_color_gradient(low = IMSCOL["blue", "full"], high = IMSCOL["blue", "f6"])


ggplot(evals, aes(
  x = bty_avg, y = score,
  color = cls_perc_eval
)) +
  geom_jitter(size = 2) +
  scale_color_gradient(low = COL["red", "full"], high = COL["red", "f8"])