ColToRgb.RdR color to RGB (red/green/blue) conversion.
ColToRgb(col, alpha = FALSE)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.
logical value indicating whether alpha channel (opacity) values should be returned.
This is merely a wrapper to col2rgb, defined in order to follow this package's naming conventions.
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.
ColToRgb("peachpuff")
#> [,1]
#> red 255
#> green 218
#> blue 185
ColToRgb(c(blu = "royalblue", reddish = "tomato")) # names kept
#> blu reddish
#> red 65 255
#> green 105 99
#> blue 225 71
ColToRgb(1:8)
#> [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
#> red 0 223 97 34 40 205 245 158
#> green 0 83 208 151 226 11 199 158
#> blue 0 107 79 230 229 188 16 158