gray
Palette of Grays
Description
Generates gray colors.
Usage
gray(level, alpha = NULL)
grey(level, alpha = NULL)
Arguments
| level |
a vector of numbers between 0 and 1 specifying the darkness of the desired grays.
|
| alpha |
a number or a vector of length(level) numbers between 0 and 1 specifying
the opacity of the grays. If NULL (the default), the opacity is not included in
the color string.
|
Value
returns a color string for each level with the red, green, and blue values equal.
The color strings have the format "#RRGGBB" or "#RRGGBBAA" where the XX are
two digit hexadecimal values (range 00-FF) for the red, green, blue, and possible
alpha (opacity) components of the colors.
Note
grey and gray are two names for the same function.
See Also
Examples
gray(seq(0.5, 1, len=5))