ggplot_add: Add custom objects to ggplot
Description
This generic allows you to add your own methods for adding custom objects to
a ggplot with +.gg.
Usage
ggplot_add(object, plot, object_name)
Arguments
object
An object to add to the plot
plot
The ggplot object to add object to
object_name
The name of the object to add
Value
A modified ggplot object