Pixelgen ggplot2 color themes — color-themes • pixelatorR

These functions return ggplot2 color scales that uses Pixelgen accent colors. Works both for discrete and sequential data and sets colors both for fill and color aesthetics.

Usage

color_discrete_pixelgen(
  hue = NULL,
  level = NULL,
  aes_type = NULL,
  shuffle = FALSE,
  indices = NULL
)

color_sequential_pixelgen(hue = "purples", direction = 1, aes_type = NULL)

color_divergent_pixelgen(
  hue_low = "blues",
  hue_high = "reds",
  limits = NULL,
  aes_type = NULL
)

Arguments

hue: The hue to use for the colors. See Pixelgen_accent_colors for available hues.
level: The level of the hue to use. See Pixelgen_accent_colors for available levels.
aes_type: The aesthetics type to color. Either "fill" or "color" or NULL to color both (default).
shuffle: Whether to shuffle the colors in the resulting palette. Default is FALSE.
indices: A vector of indices to control the selection of colors.
direction: The direction of the color gradient. 1 for normal, -1 for reversed.
hue_low, hue_high: The low/high hue for the color gradient. For example, hue_low = 'blues' and hue_high = 'reds' will create a gradient from blue to red with white in the middle.
limits: The limits of the color scale.

Value

A list of ggplot2 scales that can be added to a ggplot object.

Examples

library(ggplot2)
library(dplyr)

# Discrete colors
ggplot(mtcars, aes(cyl, wt, fill = factor(gear))) +
  geom_col() +
  color_discrete_pixelgen()


# Sequential scale
ggplot(mtcars, aes(cyl, wt, color = disp)) +
  geom_point() +
  color_sequential_pixelgen()


# Divergent scale
ggplot(mtcars %>% mutate(disp = scale(disp)), aes(cyl, gear, fill = disp)) +
  geom_tile() +
  color_divergent_pixelgen(limits = c(-2, 2), hue_low = "cyans", hue_high = "beiges")