distinct_palette: Colour palettes suitable for 20+ categories

In david-barnett/microViz: Microbiome Data Analysis and Visualization

Colour palettes suitable for 20+ categories

Description

Available palettes (max colors) are "brewerPlus" (41), "kelly" (20) and "greenArmytage" (25).

• "brewerPlus" is an arbitrary expansion of the "Paired" and "Dark2" colorbrewer palettes. The philosophy behind this expansion was to ensure that similar colours are far apart, and the earlier colours are attractive.

• "kelly" is based on the 22-colour palette developed by Kenneth Kelly but with white and black starting colours removed. This palette is ordered such that the first colours are most distinct.

• "greenArmytage" is based on a 26-colour palette proposed by Paul Green-Armytage, with black removed. This palette is not ordered by maximum contrast.

Usage

distinct_palette(n = NA, pal = "brewerPlus", add = "lightgrey")

Arguments

n	number of colours to return
pal	palette name, one of "brewerPlus", "kelly", "greenArmytage"
add	colour to append to end of palette, as colour n+1, lightgrey by default for the use as "other" taxa in comp_barplot, or NA for no additional colour.

Details

Hex color codes for 'kelly' and 'greenArmytage' palettes are copied and slightly modified from the Polychrome R package: i.e. Polychrome::kelly.colors() and Polychrome::green.armytage.colors()

Please consider also citing Coombes 2019 \Sexpr[results=rd]{tools:::Rd_expr_doi("10.18637/jss.v090.c01")} if you use either of these palettes.

See the Polychrome reference manual for more information: https://CRAN.R-project.org/package=Polychrome

Value

vector of colours

Examples

brewerPlus <- distinct_palette()
scales::show_col(brewerPlus)

kelly <- distinct_palette(pal = "kelly")
scales::show_col(kelly)

greenArmytage <- distinct_palette(pal = "greenArmytage")
scales::show_col(greenArmytage)

david-barnett/microViz documentation built on April 17, 2025, 4:25 a.m.