theme_line_dft: Applies a standardised DfT theme to a ggplot line plot

In department-for-transport/dftplotr: Functions to Produce Charts in the DfT Style

Applies a standardised DfT theme to a ggplot line plot

Description

Applies a standardised DfT theme to a ggplot line plot.

Usage

theme_line_dft(
  legend_position = "none",
  base_family = "",
  base_size = 14,
  base_line_size = 2,
  margin_sizes = c(2, 1, 1, 1),
  accuracy = 1,
  labels = TRUE,
  palette = "main.palette",
  gradient = FALSE,
  label_size = 0.8,
  label_nudge = 1,
  ...
)

Arguments

legend_position	the desired legend position. Selects bottom by default.
base_family	Font family
base_size	The base font size
base_line_size	The base line size
margin_sizes	The margin size in cm. Takes a list of the four margins in the order top, right, bottom, left.
accuracy	The accuracy of the y-axis, default to 1 for 0 decimal place. 0.1 would give 1 decimal place, 0.01 would give 2 decimal places.
labels	Booleans reponse whether to directly label lines on the chart. Defaults to TRUE
palette	The name of the DfT palette you want to use
gradient	Boolean response whether to use gradient palette instead of standard palettes. Defaults to false.
label_size	numeric quantity to set size of font
label_nudge	numeric quantity to move labels to the right (greater than 1) or left (less than 1)
...	Other arguments to pass to extract gradients function

Details

This theme has been designed using charting best practice principles.

Examples

## Simple line plot using standard line theme with default options

library(ggplot2)

df <- economics_long[economics_long$variable %in% c("psavert", "uempmed"), ]

# plot
ggplot(df, aes(x=date, y=value, col=variable, label=variable)) +
  geom_line(size = 1) +
  theme_line_dft()
## More complex line plot selecting another dft palette

library(ggplot2)

df <- economics_long[economics_long$variable %in% c("psavert", "uempmed"), ]

# plot
ggplot(df, aes(x=date, y=value, col=variable, label=variable)) +
  geom_line(size = 1) +
  theme_line_dft(palette = "clear.skies")
## More complex line plot using a gradient palette with two groups

library(ggplot2)

df <- economics_long[economics_long$variable %in% c("psavert", "uempmed"), ]

# plot
ggplot(df, aes(x=date, y=value, col=variable, label=variable)) +
  geom_line(size = 1) +
  theme_line_dft(gradient = TRUE, n=2)

department-for-transport/dftplotr documentation built on April 3, 2024, 3:55 p.m.