Description Usage Arguments Value Author(s) See Also Examples
dpal
creates divergent color palettes using the HCL color space.
Divergent color palettes consist of a gradient that goes from dark to
light to dark where both ends of the gradient are a separate hue.
Divergent color palettes are suitable when low and high values are of
importance, but middle range values are less important.
1 2 |
n |
number of colors to create |
hue |
vector of length 2 giving the first and second hues to use |
chroma |
chroma value for palette |
luminance |
vector of length 2 giving the start and end bounds for the range of luminance values |
power |
parameter to control how chroma and luminance increase/decrease |
alpha |
transparency level defined on the interval [0, 1] where 0 = transparent and 1 = opaque |
fixup |
logical, should RGB value be corrected (see |
dpal
returns a vector of hex colors
Michael Malick
1 2 3 4 5 6 7 8 9 10 11 12 | plotpal(dpal(200))
plotpal(dpal(200, luminance = c(30, 90)))
plotpal(dpal(200, luminance = c(30, 90), power = 2))
plotpal(dpal(200, luminance = c(30, 90), power = 0.8))
plotpal(dpal(200, hue = c(100, 240)))
plotpal(dpal(200, hue = c(40, 240), luminance = c(30, 90)))
mat <- matrix(c(rnorm(100), rnorm(100) + 1, rnorm(100) + 2,
rnorm(100) + 3),
ncol = 4)
image(z = mat, col = dpal(200), axes = FALSE)
box()
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