gtable_frame {egg}

gtable_frame

Description

Reformat the gtable associated with a ggplot object into a 3x3 gtable where the central cell corresponds to the plot panel(s).

Usage

gtable_frame(g, width = unit(1, "null"), height = unit(1, "null"),
  debug = FALSE)

Arguments

g

gtable

width

requested width

height

requested height

debug

logical draw gtable cells

Value

3x3 gtable wrapping the plot

Examples

library(grid)
library(gridExtra)
p1 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point()

p2 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point() + facet_wrap( ~ cyl, ncol=2, scales = 'free') +
  guides(colour='none') +
  theme()

p3 <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) +
  geom_point() + facet_grid(. ~ cyl, scales = 'free')

g1 <- ggplotGrob(p1);
g2 <- ggplotGrob(p2);
g3 <- ggplotGrob(p3);
fg1 <- gtable_frame(g1)
fg2 <- gtable_frame(g2)
fg12 <- gtable_frame(gtable_rbind(fg1,fg2), width=unit(2,'null'), height=unit(1,'null'))
fg3 <- gtable_frame(g3, width=unit(1,'null'), height=unit(1,'null'))
grid.newpage()
combined <- gtable_cbind(fg12, fg3)
grid.draw(combined)