Create a vector of
N contiguous colors.
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an integer; the number of distinct levels in the color map
a real number between 0 and 1; the saturation amount
The color maps that ship with R (see, for example,
terrain.colors) do not include the most common color
maps used in publications in the microarray literature. This
collection of color maps expands the available options. The functions
bluescale each range
from pure black for low values to a pure primary color for high
values. The synonyms
greysale range from
pure black to pure white.
redgreen color map ranges from pure green at the low end,
through black in the middle, to pure red at the high end. Although
this is the most common color map used in the microarray literature,
it will prove problematic for individuals with red-green color-blindness.
blueyellow color map ranges from pure blue at the low end,
through gray in the middle, to pure yellow at the high end.
jetColors map tries to reproduce the default "jet" color map
cyanyellow color map was added to provide a divergent map
that should be usable by the majority of individuals whose vision has
a color deficit. It ranges from cyan (a mixture of blue and green) at
the low to yellow (a mixture of red and green) at the high end. Since
the vast majority of color deficits arise because an individual lacks
cones for one of the three primary colors (red, green, or blue), this
colormap should stil provide adequate contrasts.
A character vector '
cv' of color names. This can be used to
create a user-defined color palette for subsequent graphics by
palette(cv)' or directly in a '
col=' specification in
par' or in graphics functions such as '
blueyellow are inconsistent with
respect to which color represents low values and which color
represents high values. It is too late to fix this.
Kevin R. Coombes <email@example.com>
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