scale_colour_ramp | R Documentation |
This scale creates a secondary scale that modifies the fill
or color
scale of
geoms that support it (geom_lineribbon()
and geom_slabinterval()
) to "ramp"
from a secondary color (by default white) to the primary fill color (determined
by the standard color
or fill
aesthetics). It uses the
partial_colour_ramp()
data type.
scale_colour_ramp_continuous(
from = "white",
...,
limits = function(l) c(min(0, l[[1]]), l[[2]]),
range = c(0, 1),
guide = "legend",
aesthetics = "colour_ramp"
)
scale_color_ramp_continuous(
from = "white",
...,
limits = function(l) c(min(0, l[[1]]), l[[2]]),
range = c(0, 1),
guide = "legend",
aesthetics = "colour_ramp"
)
scale_colour_ramp_discrete(
from = "white",
...,
range = c(0.2, 1),
aesthetics = "colour_ramp"
)
scale_color_ramp_discrete(
from = "white",
...,
range = c(0.2, 1),
aesthetics = "colour_ramp"
)
scale_fill_ramp_continuous(..., aesthetics = "fill_ramp")
scale_fill_ramp_discrete(..., aesthetics = "fill_ramp")
from |
The color to ramp from. Corresponds to |
... |
Arguments passed to underlying scale or guide functions. E.g.
|
limits |
One of:
|
range |
a numeric vector of length 2 that specifies the minimum and maximum
values after the scale transformation. These values should be between |
guide |
A function used to create a guide or its name. For
|
aesthetics |
Names of aesthetics to set scales for. |
These scales transform data into partial_colour_ramp
s. Each partial_colour_ramp
is a pair of two values: a from
colour and a numeric amount
between 0
and 1
representing a distance between from
and the target color (where 0
indicates the from
color and 1
the target color).
The target color is determined by the corresponding aesthetic: for example,
the colour_ramp
aesthetic creates ramps between from
and whatever the
value of the colour
aesthetic is; the fill_ramp
aesthetic creates ramps
between from
and whatever the value of the fill
aesthetic is. When the
colour_ramp
aesthetic is set, ggdist geometries will modify their
colour
by applying the colour ramp between from
and colour
(and
similarly for fill_ramp
and fill
).
Colour ramps can be applied (i.e. translated into colours) using
ramp_colours()
, which can be used with partial_colour_ramp()
to implement geoms that make use of colour_ramp
or fill_ramp
scales.
A ggplot2::Scale representing a scale for the colour_ramp
and/or fill_ramp
aesthetics for ggdist
geoms. Can be added to a ggplot()
object.
Matthew Kay
Other ggdist scales:
scale_side_mirrored()
,
scale_thickness
,
sub-geometry-scales
Other colour ramp functions:
guide_rampbar()
,
partial_colour_ramp()
,
ramp_colours()
library(dplyr)
library(ggplot2)
library(distributional)
tibble(d = dist_uniform(0, 1)) %>%
ggplot(aes(y = 0, xdist = d)) +
stat_slab(aes(fill_ramp = after_stat(x)))
tibble(d = dist_uniform(0, 1)) %>%
ggplot(aes(y = 0, xdist = d)) +
stat_slab(aes(fill_ramp = after_stat(x)), fill = "blue") +
scale_fill_ramp_continuous(from = "red")
# you can invert the order of `range` to change the order of the blend
tibble(d = dist_normal(0, 1)) %>%
ggplot(aes(y = 0, xdist = d)) +
stat_slab(aes(fill_ramp = after_stat(cut_cdf_qi(cdf))), fill = "blue") +
scale_fill_ramp_discrete(from = "red", range = c(1, 0))
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