Color to RGB Conversion

Description

R color to RGB (red/green/blue) conversion.

Usage

1
ColToRgb(col, alpha = FALSE)

Arguments

col

vector of any of the three kind of R colors, i.e., either a color name (an element of colors()), a hexadecimal string of the form "#rrggbb" or "#rrggbbaa", or an integer i meaning palette()[i]. Non-string values are coerced to integer.

alpha

logical value indicating whether alpha channel (opacity) values should be returned.

Details

This is merely a wrapper to col2rgb, defined in order to follow this package's naming conventions.

Value

A matrix with a column for each color. The three rows of the matrix indicate red, green and blue value and are named "red", "green", and "blue" accordingly. The matrix might have a 4th row if an alpha channel is requested.

Author(s)

Andri Signorell <andri@signorell.net>

See Also

col2rgb, RgbToCol

Examples

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ColToRgb("peachpuff")
ColToRgb(c(blu = "royalblue", reddish = "tomato")) # names kept

ColToRgb(1:8)

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