| gray.colors {grDevices} | R Documentation |
Create a vector of n gamma-corrected gray colors.
gray.colors(n, start = 0.3, end = 0.9, gamma = 2.2) grey.colors(n, start = 0.3, end = 0.9, gamma = 2.2)
n |
the number of gray colors (>= 1) to be in the palette. |
start |
starting gray level in the palette (should be between
0 and 1 where zero indicates "black" and one
indicates "white"). |
end |
ending gray level in the palette. |
gamma |
the gamma correction. |
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.
A vector of n gray colors.
pie(rep(1,12), col = gray.colors(12)) barplot(1:12, col = gray.colors(12))