hex: Convert Colors to Hexadecimal Strings

In colorspace: A Toolbox for Manipulating and Assessing Colors and Palettes

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))

colorspace documentation built on Sept. 11, 2024, 7:05 p.m.