R: Convert a color to use alpha transparency

colwalpha {broman}

R Documentation

Convert a color to use alpha transparency

Convert a color to RGB and then to RGB with alpha transparency

colwalpha(color, alpha = 1)

`color`	A character string for a color
`alpha`	Traparency value (between 0 and 1)

A character string representing a color

colwalpha(c("blue", "red"), 0.5)

[Package broman version 0.84 Index]