R: Show a palette/colormap for black/white and colorblind safety

pal.safe {pals} | R Documentation

## Show a palette/colormap for black/white and colorblind safety

### Description

A single palette/colormap is shown (1) without any modifications (2) in black-and-white as if photocopied (3) as seen by deutan color-blind (4) as seen by protan color-blind (5) as seen by tritan color-blind

### Usage

    pal.safe(pal, n = 100, main = NULL)

### Arguments

`pal` | A palette function or a vector of colors.
`n` | The number of colors to display for palette functions.
`main` | Title to display at the top of the test image

### Details

Rates of colorblindness in women are low, but in men the rates are around 3 to 7 percent, depending on the race.

What to look for:

1. Are colors still unique when viewed in less-than full color?

2. Is a sequential colormap still sequential?

### Value

None.

### Author(s)

Kevin Wright

### References

Vischeck. http://www.vischeck.com/vischeck/

None

### Examples

    pal.safe(glasbey)
    pal.safe(rainbow, main="rainbow") # Really, really bad
    pal.safe(cubicyf(100), main="cubicyf")
    pal.safe(parula, main="parula")

[Package pals version 1.5 Index]