hsv
HSV Color Specification
Create a vector of colors from vectors specifying hue, saturation and value.
Usage
hsv(h = 1, s = 1, v = 1, alpha)
Arguments
 h,s,v
 numeric vectors of values in the range
[0, 1]
for ‘hue’, ‘saturation’ and ‘value’ to be combined to form a vector of colors. Values in shorter arguments are recycled.  alpha
 numeric vector of values in the range
[0, 1]
for alpha transparency channel (0 means transparent and 1 means opaque).
Details
Semitransparent colors (0 < alpha < 1
) are supported only on
some devices: see rgb
.
Value

This function creates a vector of colors corresponding to the
given values in HSV space. The values returned by
hsv
can be
used with a col=
specification in graphics functions or in
par
.
See Also
hcl
for a perceptually based version of hsv()
,
rgb
and rgb2hsv
for RGB to HSV conversion;
rainbow
,
gray
.
Examples
library(grDevices)
require(graphics)
hsv(.5,.5,.5)
## Red tones:
n < 20; y < sin(3*pi*((1:n)1/2)/n)
op < par(mar = rep(1.5, 4))
plot(y, axes = FALSE, frame.plot = TRUE,
xlab = "", ylab = "", pch = 21, cex = 30,
bg = rainbow(n, start = .85, end = .1),
main = "Red tones")
par(op)
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