color_gradienter: Color Gradienter

In JoeyStanley/joeyr: Functions for Vowel Data

Color Gradienter

Description

Get some number of equidistant colors between two colors.

Usage

color_gradienter(hi, lo = "#ffffff", shades)

Arguments

hi	A string, in RGB format ("#123456")
lo	A string, in RBG format ("#ffffff"). The default is white.
shades	An integer

Details

This function takes two colors and a number and returns an n-length list of colors that are all equidistant from one another. This is handy for plotting categorical, ordinal, or binned data but you want to use continuous colors.

Note, this is a little buggy and may not work as expected. I don't know enough about how colors are handled to fix bugs. Please ese with caution.

Value

A list of strings, in RGB format, the length of 'shades' and that are equidistant from each other from 'hi' to 'lo'.

Examples

library(ggplot2)
# By itself, it returns just a list.
color_gradienter("#33458F", "#ffffff", 5)

# This can be fed into ggplot::scale_color_manual()
df <- data.frame(x = rnorm(50, 0, 1),
                 y = rnorm(50, 0, 1),
                 color = sample(letters[1:5], 50, replace = TRUE))
ggplot(df, aes(x, y, color = color)) +
    geom_point(size = 5) +
    scale_color_manual(values = color_gradienter(hi = "#33458F", lo = "#ffffff", 5))

JoeyStanley/joeyr documentation built on April 7, 2023, 8:37 p.m.