Description Usage Arguments Details Value See Also Examples
Create a colorblind-safe vector of n
isoluminent
colors.
1 2 |
n |
the number of colors to be in the palette. |
mincolor |
a color with which to replace the lower end of the scale. |
maxcolor |
a color with which to replace the upper end of the scale. |
invert |
logical indicating whether the palette should be inverted. |
gamma |
the exponent to use for each channel when
converting to greyscale, such that |
alpha |
the alpha transparency for the palette. |
The colormap is isoluminent and perceived by those with a red-green color perception deficiency as a linear ramp between blue and yellow. However, the colormap has been enriched with a red control point for those with normal color vision, with the shade carefully chosen to avoid creating a non-linear ramp for those with red-green color perception deficiency. As the color map is isoluminent, it will appear as one shade of grey across the entire range when printed on a black & white printer.
A character vector of color names. This can be used either
to create a user-defined color palette for subsequent
graphics by palette(cv)
, a
col =
specification in graphics functions or in
par
.
1 2 3 |
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