col2hcl: Modify standard R colour in hcl colour space.
In hadley/scales: Scale Functions for Visualization

col2hcl

R Documentation

Modify standard R colour in hcl colour space.

Description

Transforms rgb to hcl, sets non-missing arguments and then backtransforms to rgb.

Usage

col2hcl(colour, h = NULL, c = NULL, l = NULL, alpha = NULL)

Arguments

`colour`	character vector of colours to be modified
`h`	Hue, `⁠[0, 360]⁠`
`c`	Chroma, `⁠[0, 100]⁠`
`l`	Luminance, `⁠[0, 100]⁠`
`alpha`	Alpha, `⁠[0, 1]⁠`.

Examples

reds <- rep("red", 6)
show_col(col2hcl(reds, h = seq(0, 180, length = 6)))
show_col(col2hcl(reds, c = seq(0, 80, length = 6)))
show_col(col2hcl(reds, l = seq(0, 100, length = 6)))
show_col(col2hcl(reds, alpha = seq(0, 1, length = 6)))

hadley/scales documentation built on Jan. 10, 2024, 2:06 p.m.