swfscMisc (version 1.1)

transparent: Transparent Colors

Description

Return transparent form of a named color.

Usage

transparent(col, percent = 50)

Arguments

col

vector of colors as name, hexadecimal, or positive integer (see col2rgb).

percent

percent of transparency (0 = solid, 100 = transparent).

Examples

pct <- seq(0, 100, by = 10)
plot(pct, pct, bg = transparent("red", pct), pch = 21, cex = 4, xlab = "X", ylab = "Y")