theme_gspace: RGraphSpace ggplot2 themes

In RGraphSpace: A Lightweight Interface Between 'igraph' and 'ggplot2' Graphics

RGraphSpace ggplot2 themes

Description

A set of ggplot2 themes used by RGraphSpace plots.

Usage

theme_gspace_th0(
  txt_size = 1,
  leg_size = 1,
  bg_colour = "grey95",
  discrete_fill = FALSE,
  discrete_colour = FALSE,
  ...
)

theme_gspace_th1(
  txt_size = 1,
  leg_size = 1,
  bg_colour = "grey95",
  discrete_fill = FALSE,
  discrete_colour = FALSE,
  ...
)

theme_gspace_th2(
  txt_size = 1,
  leg_size = 1,
  bg_colour = "grey95",
  discrete_fill = FALSE,
  discrete_colour = FALSE,
  ...
)

theme_gspace_th3(
  txt_size = 1,
  leg_size = 1,
  bg_colour = "grey95",
  discrete_fill = FALSE,
  discrete_colour = FALSE,
  ...
)

theme_gspace_coords(
  theme = "th0",
  is_norm = FALSE,
  xlab = "Graph coordinates 1",
  ylab = "Graph coordinates 2",
  expand = NULL,
  ...
)

theme_gspace_legend(
  leg_size = 1,
  discrete_fill = FALSE,
  discrete_colour = FALSE,
  ...
)

Arguments

txt_size	Numeric value to scale plot- and axis-related text elements.
leg_size	Numeric value to scale legend-related elements.
bg_colour	A color name or hex code specifying the panel background.
discrete_fill	Logical; if TRUE, treats the fill legend as discrete to adjust key size.
discrete_colour	Logical; if TRUE, treats the colour legend as discrete to adjust key size.
...	Additional arguments passed to theme_gspace_th* and ggtheme.
theme	Character string specifying the GraphSpace theme variant. Options: th0, th1, th2, and th3.
is_norm	Logical; if TRUE, assumes plot coordinates are already normalized in [0, 1].
xlab	The title for the 'x' axis.
ylab	The title for the 'y' axis.
expand	A range expansion factor applied to both the lower and upper limits of the 'x' and 'y' scales.

Details

theme_gspace_th0() is a minimal wrapper around theme_gray that simplifies axis and legend scaling. The txt_size and leg_size arguments aggregate related theme parameters for quick thematic overrides.

theme_gspace_th1() builds on theme_gspace_th0() and modifies grid lines, axis appearance, and panel borders.

theme_gspace_th2() is similar to theme_gspace_th1() with simplified grid elements and a customizable panel background.

theme_gspace_th3() is similar to theme_gspace_th2() but with slightly adjusted margins, tick appearance, and legend formatting.

The theme_gspace_coords() is a helper function that also adds axes scales for normalized coordinates. It configures axis breaks, limits, and expansion for graph layouts. Plot coordinates are ideally normalized to the interval [0, 1].

theme_gspace_legend() is helper function that adjusts legend text, title, and key sizes by a single scaling factor.

Value

theme_gspace_th*() return a ggplot2 theme object.

theme_gspace_coords() returns a list containing scale and theme components that can be added to a ggplot2 plot.

theme_gspace_legend() returns a list of theme and guide components.

See Also

ggtheme, theme

Examples

library(RGraphSpace)
library(ggplot2)

ggplot(mtcars, aes(wt, mpg)) +
  geom_point() +
  theme_gspace_th0()
  
ggplot(mtcars, 
  aes(scales::rescale(wt), 
      scales::rescale(mpg))) +
  geom_point() +
  theme_gspace_coords("th2", is_norm = TRUE)
  
# Reduce legend element sizes
ggplot(mtcars, aes(wt, mpg, fill = factor(cyl))) + 
  geom_point(shape = 21) + 
  theme_gspace_legend(0.8)

RGraphSpace documentation built on June 13, 2026, 9:06 a.m.