# ColorRamps

From hexbin v1.26.3
by ORPHANED

##### Color Ramps on Perceptually Linear Scales

Functions for returning colors on perceptually linear scales,
where steps correspond to

- Keywords
- color

##### Usage

```
LinGray (n, beg=1, end=92)
BTC (n, beg=1, end=256)
LinOCS (n, beg=1, end=256)
heat.ob (n, beg=1, end=256)
magent (n, beg=1, end=256)
plinrain(n, beg=1, end=256)
```

##### Arguments

- n
- number of colors to return from the ramp
- beg
- begining of ramp, integer from 1-255
- end
- end of ramp, integer from 1-255

##### Details

Several precalulated color ramps, that are on a perceptually linear
color scale. A perceptually linear color scale is a scale where each
jump corresponds to a

When using the ramps, if `beg`

is less than `end`

the ramp
will be reversed.

##### Value

- returns an array of colors

##### References

Haim Levkowitz (1997)
*Color Theory and Modeling for Computer Graphics,
Visualization, and Multimedia Applications*.
Kluwer Academic Publishers, Boston/London/Dordrecht.

##### See Also

##### Examples

```
h <- hexbin(rnorm(10000),rnorm(10000))
plot(h, colramp= BTY)
## looks better if you shave the tails:
plot(h, colramp= function(n){LinOCS(n,beg=15,end=225)})
```

*Documentation reproduced from package hexbin, version 1.26.3, License: GPL-2*

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