ggshadow (version 0.0.5)

scale_viridis: Viridis colour scales from viridisLite

Description

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/>.

Usage

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"
)

Value

a scale object to add to a plot.

Arguments

...

Other arguments passed on to [discrete_scale()], [continuous_scale()], or [binned_scale] to control name, limits, breaks, labels and so forth.

alpha

The alpha transparency, a number in [0,1], see argument alpha in hsv.

begin, end

The (corrected) hue in [0,1] at which the color map begins and ends.

direction

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.

option

A character string indicating the color map option to use. Eight options are available:

• "magma" (or "A")

• "inferno" (or "B")

• "plasma" (or "C")

• "viridis" (or "D")

• "cividis" (or "E")

• "rocket" (or "F")

• "mako" (or "G")

• "turbo" (or "H")

aesthetics

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")`.

values

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.

space

colour space in which to calculate gradient. Must be "Lab" - other values are deprecated.

na.value

Missing values will be replaced with this value.

guide

A function used to create a guide or its name. See guides() for more information.

See Also

Other colour scales: scale_brewer, scale_colour_hue, scale_colour_steps, scale_gradient, scale_grey

Examples

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')