R: Generate Color Palettes

get_palette {ggpubr} | R Documentation

## Generate Color Palettes

### Description

Generate a palette of k colors from ggsci palettes, RColorbrewer palettes and custom color palettes. Useful to extend RColorBrewer and ggsci to support more colors.

### Usage

    get_palette(palette = "default", k)

### Arguments

`palette` | Color palette. Allowed values include: Grey color palettes: "grey" or "gray"; RColorBrewer palettes, see `brewer.pal` and details section. Examples of palette names include: "RdBu", "Blues", "Dark2", "Set2", ...; Custom color palettes. For example, palette = c("#00AFBB", "#E7B800", "#FC4E07"); ggsci scientific journal palettes, e.g.: "npg", "aaas", "lancet", "jco", "ucscgb", "uchicago", "simpsons" and "rickandmorty".
`k` | the number of colors to generate.

### Details

RColorBrewer palettes: To display all available color palettes, type this in R:RColorBrewer::display.brewer.all(). Color palette names include:

- Sequential palettes, suited to ordered data that progress from low to high. Palette names include: Blues BuGn BuPu GnBu Greens Greys Oranges OrRd PuBu PuBuGn PuRd Purples RdPu Reds YlGn YlGnBu YlOrBr YlOrRd.

- Diverging palettes:Gradient colors. Names include: BrBG PiYG PRGn PuOr RdBu RdGy RdYlBu RdYlGn Spectral.

- Qualitative palettes: Best suited to representing nominal or categorical data. Names include: Accent, Dark2, Paired, Pastel1, Pastel2, Set1, Set2, Set3.

### Value

Returns a vector of color palettes.

### Examples

    data("iris")
    iris$Species2 <- factor(rep(c(1:10), each = 15))

    # Generate a gradient of 10 colors
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species2",
     palette = get_palette(c("#00AFBB", "#E7B800", "#FC4E07"), 10))

    # Scatter plot with default color palette
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species")

    # RColorBrewer color palettes
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species", palette = get_palette("Dark2", 3))

    # ggsci color palettes
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species", palette = get_palette("npg", 3))

    # Custom color palette
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species",
     palette = c("#00AFBB", "#E7B800", "#FC4E07"))

    # Or use this
    ggscatter(iris, x = "Sepal.Length", y = "Petal.Length",
     color = "Species",
     palette = get_palette(c("#00AFBB", "#FC4E07"), 3))

[Package ggpubr version 0.1.6 Index]