Show a palette with hierarchical clustering

The palette colors are converted to LUV coordinates before clustering. (RGB coordinates are available, but not recommended.)

Usage

pal.cluster(pal, n = 50, type = "LUV", main = "")

Arguments

pal

A palette function or a vector of colors.

n

The number of colors to display for palette functions.

type

Either "LUV" (default) or "RGB".

main

Title to display at the top of the test image

Value

None

Details

What to look for:

Colors that are visually similar tend to be clustered together.

References

None

Author

Kevin Wright

Examples

pal.cluster(alphabet(), main="alphabet")

pal.cluster(glasbey, main="glasbey") # two royal blues are very similar
#> Only 32 colors are available with 'glasbey'.

pal.cluster(kelly, main="kelly") # two black-ish colors are very similar
#> Only 22 colors are available with 'kelly'.

# pal.cluster(watlington, main="watlington")
# pal.cluster(coolwarm(15), main="coolwarm") # curiously, grey clusters with blue