R: Convert Colors to Hexadecimal Strings

hex {colorspace} | R Documentation

## Convert Colors to Hexadecimal Strings

### Description

This functions converts `color-class` objects into hexadecimal strings.

### Usage

    hex(from, gamma = NULL, fixup = FALSE)

### Arguments

`from` | The color object to be converted.
`gamma` | Deprecated.
`fixup` | Should the color be corrected to a valid RGB value before correction. The default is to convert out-of-gamut colors to the string `"NA"`.

### Details

The color objects are first converted to sRGB color objects. They are then multiplied by 255 and rounded to obtain an integer value. These values are then converted to hexadecimal strings of the form `"#RRGGBB"` and suitable for use as color descriptions for R graphics. Out of gamut values are either corrected to valid RGB values by translating the the individual primary values so that they lie between 0 and 255.

### Value

A vector of character strings.

### Author(s)

Ross Ihaka

### See Also

`hex2RGB`, `RGB`, `sRGB`, `HSV`, `XYZ`, `LAB`, `polarLAB`, `LUV`, `polarLUV`.

### Examples

    hsv <- HSV(seq(0, 360, length.out = 7)[-7], 1, 1)
    hsv
    hex(hsv)
    barplot(rep(1,6), col = hex(hsv))

[Package colorspace version 2.0-0 Index]