hsv
Hue, Saturation, Value Color Specification
Description
Specifies colors using the hue/saturation/value color model.
Usage
hsv(h = 1, s = 1, v = 1, alpha = 1, gamma = 1)
Arguments
| h |
a vector of numbers between 0 and 1 specifying the hue.
0 and 1 are red; between are orange, yellow, green,
blue, indigo, and violet.
|
| s |
a vector of numbers between 0 and 1 specifying the saturation.
Small numbers give washed-out colors.
|
| v |
a vector of numbers between 0 and 1 specifying the value.
Small numbers give muddy colors.
|
| alpha |
a vector of numbers between 0 and 1 specifying the opacity.
Zero is completely transparent.
|
| gamma |
a vector of positive numbers giving the gamma correction.
The red, green, and blue components are raised to this power.
(This argument is not in open-source R.)
|
Value
returns a vector of color strings as long as the longest of h, s,
v, alpha, and gamma (except if one vector
is zero long, the output is zero), giving the colors specified by
the HSV parameterization.
The color strings have the format "#RRGGBB" or "#RRGGBBAA" where XX are
two digit hexadecimal values (range 00-FF) for the red, green, blue, and possible
alpha (opacity) components of the colors.
See Also
Examples
hsv(h=(0:4)/5)
col2rgb(hsv(h=seq(0.5,1.5,len=9)%%1, s=0.5))