Get plot components

Extract plot components from a ggplot or gtable. get_plot_component() extracts specific grobs or a list of grobs. Note that it omits zeroGrobs and returns NULL if there is no non-zero grob to return. plot_component_names() provides the names of the components in the plot. plot_components() returns all components as a list.

get_plot_component(plot, pattern, return_all = NA)

plot_component_names(plot)

plot_components(plot)

Arguments

plot

A ggplot or gtable to extract from.

pattern

The name of the component.

return_all

If there is more than one component, should all be returned as a list? Default is NA, which returns the first component with a warning. TRUE returns all components. FALSE returns the first without warning.

Value

A grob or list of grobs (get_plot_component(), plot_components()) or a character vector (plot_component_names())

Examples

library(ggplot2)

p <- ggplot(mpg, aes(displ, cty)) + geom_point()
ggdraw(get_plot_component(p, "ylab-l"))