Last data update: 2014.03.03
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R: Alphablending for colors
alphablend | R Documentation |
Alphablending for colors
Description
Convert colors to semitransparent colors.
Usage
alphablend(col, alpha = NULL, bg = NULL)
Arguments
col |
a vector specifying colors.
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alpha |
a numeric vector containing the alpha values (between 0 and 1).
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bg |
the background color to be used for alphablending. This can be
used as a workaround for graphics devices that do not support
semitransparent colors.
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Value
a vector containing the semitransparent colors.
Author(s)
Andreas Alfons
Examples
alphablend("red", 0.6)
Results
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