Continuous scale for color and fill aesthetics with a purple gradient

scale_continuous_cognigen(..., na.value = "grey50", guide = "colourbar")

Arguments

...

Arguments passed on to ggplot2::continuous_scale

scale_name: The name of the scale that should be used for error messages associated with this scale.
name: The name of the scale. Used as the axis or legend title. If waiver(), the default, the name of the scale is taken from the first mapping used for that aesthetic. If NULL, the legend title will be omitted.

na.value

Colour to use for missing values

guide

Type of legend. Use "colourbar" for continuous colour bar, or "legend" for discrete colour legend.

Examples

library(ggplot2)

df <- data.frame(
  value = seq(1, 100),
  x = runif(100),
  y = runif(100),
  z = rnorm(100)
)

# color
ggplot(df, aes(x = x, y = y)) +
  geom_point(aes(color = z), pch = 19) +
  scale_continuous_cognigen()


# fill
ggplot(df, aes(x = value, y = y)) +
  geom_bar(aes(fill = z), stat = "identity") +
  scale_continuous_cognigen()