rand_color: Generate random colors

In colorRamp2: Generate Color Mapping Functions

Generate random colors

Description

Generate random colors

Usage

rand_color(n, hue = NULL, luminosity = "random", transparency = 0, friendly = FALSE)

Arguments

n	Number of colors
hue	The hue of the generated color. You can use following default color name: red, orange, yellow, green, blue, purple, pink and monochrome. If the value is a hexidecimal color string such as #00FFFF, the function will extract its hue value and use that to generate colors.
luminosity	it controls the luminosity of the generated color. The value should be a string containing bright, light, dark and random.
transparency	Transparency, numeric value between 0 and 1.
friendly	If it is true, light random colors will not be generated.

Details

The code is adapted from randomColor.js (https://github.com/davidmerfield/randomColor ).

Value

A vector of colors.

Author(s)

Zuguang Gu <[e-mail]>

Examples

plot(NULL, xlim = c(1, 10), ylim = c(1, 8), axes = FALSE, ann = FALSE)
points(1:10, rep(1, 10), pch = 16, cex = 5, 
    col = rand_color(10))
points(1:10, rep(2, 10), pch = 16, cex = 5, 
    col = rand_color(10, luminosity = "bright"))
points(1:10, rep(3, 10), pch = 16, cex = 5, 
    col = rand_color(10, luminosity = "light"))
points(1:10, rep(4, 10), pch = 16, cex = 5, 
    col = rand_color(10, luminosity = "dark"))
points(1:10, rep(5, 10), pch = 16, cex = 5, 
    col = rand_color(10, hue = "red", luminosity = "bright"))
points(1:10, rep(6, 10), pch = 16, cex = 5, 
    col = rand_color(10, hue = "green", luminosity = "bright"))
points(1:10, rep(7, 10), pch = 16, cex = 5, 
    col = rand_color(10, hue = "blue", luminosity = "bright"))
points(1:10, rep(8, 10), pch = 16, cex = 5, 
    col = rand_color(10, hue = "monochrome", luminosity = "bright"))

colorRamp2 documentation built on Dec. 21, 2022, 5:22 p.m.