`scale_colour_discrete_diverging.Rd`

Discrete ggplot2 color scales using the color palettes generated by `diverging_hcl`

.

```
scale_colour_discrete_diverging(
palette = NULL,
c1 = NULL,
cmax = NULL,
l1 = NULL,
l2 = NULL,
h1 = NULL,
h2 = NULL,
p1 = NULL,
p2 = NULL,
alpha = 1,
rev = FALSE,
nmax = NULL,
order = NULL,
aesthetics = "colour",
...
)
scale_color_discrete_diverging(
palette = NULL,
c1 = NULL,
cmax = NULL,
l1 = NULL,
l2 = NULL,
h1 = NULL,
h2 = NULL,
p1 = NULL,
p2 = NULL,
alpha = 1,
rev = FALSE,
nmax = NULL,
order = NULL,
aesthetics = "colour",
...
)
scale_fill_discrete_diverging(..., aesthetics = "fill")
```

- palette
The name of the palette to be used. Run

`hcl_palettes(type = "diverging")`

for available options.- c1
Chroma value at the scale endpoints.

- cmax
Maximum chroma value.

- l1
Luminance value at the scale endpoints.

- l2
Luminance value at the scale midpoint.

- h1
Hue value at the first endpoint.

- h2
Hue value at the second endpoint.

- p1
Control parameter determining how chroma should vary (1 = linear, 2 = quadratic, etc.).

- p2
Control parameter determining how luminance should vary (1 = linear, 2 = quadratic, etc.).

- alpha
Numeric vector of values in the range

`[0, 1]`

for alpha transparency channel (0 means transparent and 1 means opaque).- rev
If

`TRUE`

, reverses the order of the colors in the color scale.- nmax
Maximum number of different colors the palette should contain. If not provided, is calculated automatically from the data.

- order
Numeric vector listing the order in which the colors should be used. Default is

`1:nmax`

.- aesthetics
The ggplot2 aesthetics to which this scale should be applied.

- ...
common discrete scale parameters:

`name`

,`breaks`

,`labels`

,`na.value`

,`limits`

and`guide`

. See`discrete_scale`

for more details.

If both a valid palette name and palette parameters are provided then the provided palette parameters overwrite the parameters in the named palette. This enables easy customization of named palettes.

```
library("ggplot2")
# default colors with slightly darkened midpoint
ggplot(iris, aes(Sepal.Length, Sepal.Width, color = Species)) +
geom_point() + theme_minimal() +
scale_color_discrete_diverging(l2=75)
# color scale "Green-Orange"
ggplot(iris, aes(Sepal.Length, fill = Species)) +
geom_density(alpha = 0.7) + theme_classic() +
scale_fill_discrete_diverging(palette = "Green-Orange", rev = TRUE)
# use `nmax` and `order` to skip some colors
ggplot(iris, aes(Sepal.Length, fill = Species)) +
geom_density(alpha = 0.7) + theme_classic() +
scale_fill_discrete_diverging(palette = "Green-Orange", nmax = 5, order = c(1, 4, 5))
```