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Convert a color given by name, by its palette index or by rgb-values into a string of the form "#rrggbb" or "#rrggbbaa".
ColToHex(col, alpha = 1)
Returns the colorvalue in #rrggbb" or #rrggbbaa" format. (character)
vector of any of either a color name (an element of colors()), or an integer i meaning palette()[i]. Non-string values are coerced to integer.
the alpha value to be used. This can be any value from 0 (fully transparent) to 1 (opaque). Default is 1.
Andri Signorell <andri@signorell.net>
HexToCol, ColToRgb, colors
ColToHex(c("lightblue", "salmon")) x <- ColToRgb("darkmagenta") x[2,] <- x[2,] + 155 RgbToCol(x) RgbToHex(c(255,0,0))
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