# 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

Semi-transparent 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)`

```
# NOT RUN {
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)
# }
```

*Documentation reproduced from package grDevices, version 3.5.3, License: Part of R 3.5.3*