ggplot Color Scale

ggplot Color Scale

Usage

scale_color_dc(
  overrideWithFill = FALSE,
  colorOffset = 0,
  reverseOrder = FALSE,
  darkenPaletteForTextGeoms = FALSE,
  useColorBlindPalette = FALSE,
  colorBlindPaletteName = "safe",
  ...
)

Arguments

overrideWithFill

TRUE if you want to use the fill palette for the color mapping. (Default FALSE)

colorOffset

Offsets the ordering of the palette. E.g., colorOffset = 2 would move the first two colors to the end of the palette, starting at the 3rd color.

reverseOrder

Logical, TRUE reverses the default order of the palette. Default FALSE. Applied after colorOffset.

darkenPaletteForTextGeoms

Logical, if TRUE then the palette will be darkened slightly.

useColorBlindPalette

Logical, if TRUE uses color blind friendly palette instead of style.

colorBlindPaletteName

Name of colorblind friendly palette. Use `cols4all::c4a_palettes()` for available palettes.

...

Additional parameters passed to either scale_color_manual or scale_fill_manual functions, such as guide = 'none'

Value

ggplot color scale

See also

theme_dc

scale_dc

scale_fill_dc

Examples

library(ggplot2)
library(styles)

# Create basic ggplot object
ggplotObject <- ggplot(mtcars, aes(y=mpg, x=wt, color=as.factor(cyl))) +
    geom_point(size = 3, alpha = 0.5)

# Add the color
ggplotObject + scale_color_dc()


# Add the fill
ggplotObject + scale_color_dc(overrideWithFill = TRUE)


# Add the color with no legend using an optional parameter
ggplotObject + scale_color_dc(guide = 'none')


# Offset the colors by 1
ggplotObject + scale_color_dc(colorOffset = 1)


# Darken text when over filled layers
ggplot(mtcars, aes(y=mpg, x=wt, color=as.factor(cyl))) +
  geom_point(aes(fill = as.factor(cyl)),
             size = 10,
             pch = 21,
             color = 'transparent',
             alpha = 0.9
  ) +
  geom_text(aes(label = round(mpg, 0))) +
  scale_fill_dc() +

  # KEY - darken the text so that it is easier to view
  # Over fill
  scale_color_dc(darkenPaletteForTextGeoms = TRUE) +
  theme_dc()


# reverse the order of the palette
ggplotObject + scale_color_dc(reverseOrder = TRUE)


# Use color blind friendly palette
ggplotObject + scale_color_dc(useColorBlindPalette = TRUE)