Themes set the general aspect of the plot such as the colour of the
background, gridlines, the size and colour of fonts.
theme_net provides access to the regular ggplot2 theme, but removes any
background, axes, and ensures an aspect ratio of 1 for better
viewing of networks and graphs.
Arguments
base_size
base font size
base_family
base font family
Examples
library(ggplot2)
data(blood)
p <- ggplot(data = blood$edges, aes(from_id = from, to_id = to))
p + geom_net()
p + geom_net() + theme_net()
providing 
.