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gray {grDevices}

Gray Level Specification
Package: 
grDevices
Version: 
R 3.0.2

Description

Create a vector of colors from a vector of gray levels.

Usage

gray(level, alpha = NULL)
grey(level, alpha = NULL)

Arguments

level
a vector of desired gray levels between   and 1; zero indicates "black" and one indicates "white".
alpha
the opacity, if specified.

Details

The values returned by gray can be used with a col= specification in graphics functions or in par.

grey is an alias for gray.

Values

A vector of colors of the same length as level.

See Also

rainbow, hsv, hcl, rgb.

Examples

gray(0:8 / 8)

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