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gray.colors {grDevices}

Gray Color Palette
Package: 
grDevices
Version: 
R 3.0.2

Description

Create a vector of n gamma-corrected gray colors.

Usage

gray.colors(n, start = 0.3, end = 0.9, gamma = 2.2, alpha = NULL)
grey.colors(n, start = 0.3, end = 0.9, gamma = 2.2, alpha = NULL)

Arguments

n
the number of gray colors (≥ 1) to be in the palette.
start
starting gray level in the palette (should be between   and 1 where zero indicates "black" and one indicates "white").
end
ending gray level in the palette.
gamma
the gamma correction.
alpha
the opacity, is specified.

Details

The function gray.colors chooses a series of n gamma-corrected gray levels between start and end: seq(start^gamma, end^gamma, length = n)^(1/gamma). The returned palette contains the corresponding gray colors. This palette is used in barplot.default.

grey.colors is an alias for gray.colors.

Values

A vector of n gray colors.

See Also

gray, rainbow, palette.

Examples

require(graphics)
 
pie(rep(1, 12), col = gray.colors(12))
barplot(1:12, col = gray.colors(12))

Documentation reproduced from R 3.0.2. License: GPL-2.