# gray

0th

Percentile

##### Gray Level Specification

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

Keywords
color
##### Usage
gray(level, alpha = NULL)
grey(level, alpha = NULL)
##### Arguments
level
a vector of desired gray levels between 0 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.

##### Value

• A vector of colors of the same length as level.

rainbow, hsv, hcl, rgb.
library(grDevices) gray(0:8 / 8)