R: Show the red, green, blue, gray amount in colors of a palette

pal.channels {pals} | R Documentation

## Show the red, green, blue, gray amount in colors of a palette

### Description

The amount of red, green, blue, and gray in colors are shown.

### Usage

    pal.channels(pal, n = 150, main = "")

### Arguments

`pal` | A palette function or a vector of colors.
`n` | The number of colors to display for palette functions.
`main` | Main title.

### Details

What to look for:

1. Sequential data should usually be shown with a colormap that is smoothly increasing in lightness, as shown by the gray line.

### Value

None

### Author(s)

Kevin Wright

### References

None

### Examples

    pal.channels(parula)
    pal.channels(coolwarm)
    # pal.channels(glasbey) # Nonsensical.

[Package pals version 1.5 Index]