Description Usage Arguments Value Author(s) See Also Examples
utility function for setting transparency of colors
1 | makeTransparent(color, ...)
|
color |
character string indicating color |
... |
passed to rgb function. See in particular the alpha argument of rgb – 0 means completely transparent and alpha =1 means not transparent. |
rbg output: "A character vector with elements of 7 or 9 characters, "#" followed by the red, blue, green and optionally alpha values in hexadecimal (after rescaling to '0 ... 255')."
R. Scharpf
1 | makeTransparent("black", alpha=0.5)
|
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