Discrete colour scales using the gov_cols palette

scale_gov provides a means to easily use the gov_cols palette in charts. It applies the palette in order as an unnamed vector.

scale_gov(type = "fill", ...)

Arguments

type	sets whether the scale applies to (line) colour, the fill colour, or both.
...	additional arguments to be supplied to the underlying ggplot2 scale_ function.

Value

Will not return anything of itself, but when used in conjuntion with ggplot and (e.g.) geom_col from the package ggplot2, will apply a colour scale to a plot.

Examples

library(ggplot2)
library(govstyle)
library(dplyr)

df <- data.frame(
    group = c("apple", "apple", "apple", "pear", "pear", "pear"),
    year = c(2009, 2010, 2011, 2009, 2010, 2011),
    price = c(35, 37, 36, 24, 25, 28))

# Column chart
ggplot(df, aes(x = year, y = price, fill = group)) +
   geom_col(position = "dodge") +
   theme_gov() +
   scale_gov("fill")

# Line chart
ggplot(df, aes(x = year, y = price, colour = group)) +
   geom_line(size = 2) +
   theme_gov() +
   scale_gov("colour")

# Point chart, with filled points (black outline)
ggplot(df, aes(x = year, y = price, colour = group)) +
   geom_line() +
   geom_point(shape = 21, size = 4, stroke = 1, fill = "#ffffff") +
   theme_gov() +
   scale_gov("colour") +
   ylim(0,40)