Different Useful Color Palettes
Defines several color palettes for pimage, dissplot
and hmap.
bluered(n, bias = 1) greenred(n, bias = 1) grays(n, power = 1) greys(n, power = 1)
n |
number of different colors produces. |
bias |
a positive number. Higher values give more widely spaced colors at the high end. |
power |
control parameter determining how luminance should be increased (1 = linear, 2 = quadratic, etc.). |
bluered creates a blue-red color palette.
greenred creates a green-red color palette.
greys and grays creates gray scales.
See colorRampPalette to create your own color palettes.
A vector with n colors.
Michael Hahsler
pimage(rbind(1:100))
pimage(rbind(1:100), col = greys(100, power=2))
pimage(rbind(1:100), col = bluered(100))
pimage(rbind(1:100), col = bluered(100, bias = 2))
pimage(rbind(-100:100), col = greenred(10))
## create your own color palettes
## red to green (with 10 colors)
pimage(rbind(1:100),
col = colorRampPalette(colors = c("red", "yellow", "green"))(10))
## white to blue (with 100 colors)
pimage(rbind(1:100),
col = colorRampPalette(colors = c("white", "blue"))(100))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.