{"name":"gray.colors","title":"Gray Color Palette","pagetitle":"Gray Color Palette — gray.colors","aliases":["gray.colors","grey.colors"],"author":[],"keywords":"color","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)\ngrey.colors(n, start = 0.3, end = 0.9, gamma = 2.2, alpha = NULL)","arguments":[{"name":"n","description":"

the number of gray colors (\\(\\ge 1\\)) to be in the\n palette.

"},{"name":"start","description":"

starting gray level in the palette (should be between\n 0 and 1 where zero indicates \"black\" and one\n indicates \"white\").

"},{"name":"end","description":"

ending gray level in the palette.

"},{"name":"gamma","description":"

the gamma correction.

"},{"name":"alpha","description":"

the opacity, is specified.

"}],"has_args":true,"examples":"require(graphics)\n\npie(rep(1, 12), col = gray.colors(12))\nbarplot(1:12, col = gray.colors(12))\n","sections":[],"details":"

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

grey.colors is an alias for gray.colors.

","value":"

A vector of n gray colors.

","seealso":"

gray,\n rainbow,\n palette.

","package":{"package":"grDevices","version":"3.4.1"}}

Description

Usage

Arguments

Value

Details

See Also

Examples