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ggplot2 (version 2.1.0)

theme_update: Get, set and update themes.

Description

Use theme_get to get the current theme, and theme_set to completely override it. theme_update and theme_replace are shorthands for changing individual elements in the current theme. theme_update uses the + operator, so that any unspecified values in the theme element will default to the values they are set in the theme. theme_replace will completely replace the element, so any unspecified values will overwrite the current value in the theme with NULLs.

Usage

theme_update(...)
 
theme_replace(...)
 
theme_get()
 
theme_set(new)

Arguments

...
named list of theme settings
new
new theme (a list of theme elements)

See Also

%+replace% and +.gg

Examples

Run this code
p <- ggplot(mtcars, aes(mpg, wt)) +  geom_point() p old <- theme_set(theme_bw()) p theme_set(old) p  #theme_replace NULLs out the fill attribute of panel.background, #resulting in a white background: theme_get()$panel.background old <- theme_replace(panel.background = element_rect(colour = "pink")) theme_get()$panel.background p theme_set(old)  #theme_update only changes the colour attribute, leaving the others intact: old <- theme_update(panel.background = element_rect(colour = "pink")) theme_get()$panel.background p theme_set(old)  theme_get()   ggplot(mtcars, aes(mpg, wt)) +  geom_point(aes(color = mpg)) +  theme(legend.position = c(0.95, 0.95),  legend.justification = c(1, 1)) last_plot() +  theme(legend.background = element_rect(fill = "white", colour = "white", size = 3))

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