
The `viridis` scales provide colour maps that are perceptually uniform in both colour and black-and-white. They are also designed to be perceived by viewers with common forms of colour blindness. See also <https://bids.github.io/colormap/>.
scale_shadowcolour_viridis_d(
...,
alpha = 1,
begin = 0,
end = 1,
direction = 1,
option = "D",
aesthetics = "shadowcolour"
)scale_shadowcolour_viridis_c(
...,
alpha = 1,
begin = 0,
end = 1,
direction = 1,
option = "D",
values = NULL,
space = "Lab",
na.value = "grey50",
guide = "colourbar",
aesthetics = "shadowcolour"
)
scale_shadowcolour_viridis_b(
...,
alpha = 1,
begin = 0,
end = 1,
direction = 1,
option = "D",
values = NULL,
space = "Lab",
na.value = "grey50",
guide = "coloursteps",
aesthetics = "shadowcolour"
)
scale_shadowcolour_ordinal(
...,
alpha = 1,
begin = 0,
end = 1,
direction = 1,
option = "D",
aesthetics = "shadowcolour"
)
a scale object to add to a plot.
Other arguments passed on to [discrete_scale()], [continuous_scale()], or [binned_scale] to control name, limits, breaks, labels and so forth.
The alpha transparency, a number in [0,1], see argument alpha in
hsv
.
The (corrected) hue in [0,1] at which the viridis colormap begins.
The (corrected) hue in [0,1] at which the viridis colormap ends.
Sets the order of colors in the scale. If 1, the default, colors are ordered from darkest to lightest. If -1, the order of colors is reversed.
A character string indicating the colormap option to use. Four options are available: "magma" (or "A"), "inferno" (or "B"), "plasma" (or "C"), "viridis" (or "D", the default option) and "cividis" (or "E").
Character string or vector of character strings listing the name(s) of the aesthetic(s) that this scale works with. This can be useful, for example, to apply colour settings to the `colour` and `fill` aesthetics at the same time, via `aesthetics = c("colour", "fill")`.
if colours should not be evenly positioned along the gradient
this vector gives the position (between 0 and 1) for each colour in the
colours
vector. See rescale()
for a convenience function
to map an arbitrary range to between 0 and 1.
colour space in which to calculate gradient. Must be "Lab" - other values are deprecated.
Missing values will be replaced with this value.
A function used to create a guide or its name. See
guides()
for more information.
Other colour scales:
scale_brewer
,
scale_colour_hue
,
scale_colour_steps
,
scale_gradient
,
scale_grey
library( ggplot2 )
p <- ggplot(mtcars, aes(wt, mpg, shadowcolour=as.factor(gear)))
p + geom_glowpoint() + scale_shadowcolour_viridis_d() + guides(shadowcolour='none')
library( ggplot2 )
p <- ggplot(mtcars, aes(wt, mpg, shadowcolour=gear))
p + geom_glowpoint() + scale_shadowcolour_viridis_c() + guides(shadowcolour='none')
library( ggplot2 )
p <- ggplot(mtcars, aes(wt, mpg, shadowcolour=gear))
p + geom_glowpoint() + scale_shadowcolour_viridis_b() + guides(shadowcolour='none')
library( ggplot2 )
p <- ggplot(mtcars, aes(wt, mpg, shadowcolour=as.factor(gear)))
p + geom_glowpoint() + scale_shadowcolour_ordinal() + guides(shadowcolour='none')
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