rgb2hsv
Hue, Saturation, Value Color Model
Description
Converts from red, green, and blue color parameterization to
hue, saturation, and value parameterization.
Usage
rgb2hsv(r, g = NULL, b = NULL, maxColorValue = 255)
Arguments
| r |
either a numeric vector of red values or a 3-row matrix
of red, green, and blue values. The values should be between
0 and maxColorValue.
|
| g |
a numeric vector of green values between 0 and maxColorValue.
If omitted or NULL, then r must be a 3-row matrix.
|
| b |
a numeric vector of blue values between 0 and maxColorValue.
If omitted or NULL, then r must be a 3-row matrix.
|
| maxColorValue |
a numeric value giving the scale of the color values. All
color values must be between 0 and maxColorValue.
|
Value
returns a 3-row by length(r) column (or ncol(r) if r is a matrix)
numeric matrix giving the HSV parameters for the input colors.
See Also
Examples
rgb2hsv(col2rgb(c(Danger="red", Caution="yellow", Normal="green")))